Martin Wolf

Summary

Affiliation: University Hospital
Country: Switzerland

Publications

  1. doi request reprint Advances in near-infrared spectroscopy to study the brain of the preterm and term neonate
    Martin Wolf
    Biomedical Optics Research Laboratory, Clinic of Neonatology, University Hospital Zurich, Frauenklinikstr 10, 8091 Zurich, Switzerland
    Clin Perinatol 36:807-34, vi. 2009
  2. pmc A phase II randomized clinical trial on cerebral near-infrared spectroscopy plus a treatment guideline versus treatment as usual for extremely preterm infants during the first three days of life (SafeBoosC): study protocol for a randomized controlled tria
    Simon Hyttel-Sorensen
    Department of Neonatology, Rigshospitalet, Blegdamsvej 9, Copenhagen DK 2100, Denmark
    Trials 14:120. 2013
  3. pmc 500 ml of blood loss does not decrease non-invasive tissue oxygen saturation (StO2) as measured by near infrared spectroscopy - A hypothesis generating pilot study in healthy adult women
    Victor Jeger
    Department of Emergency Medicine, University and University Hospital of Berne Inselspital, Berne, Switzerland
    J Trauma Manag Outcomes 4:5. 2010
  4. doi request reprint Speech therapy changes blood circulation and oxygenation in the brain and muscle: a near-infrared spectrophotometry study
    Martin Wolf
    Clinic of Neonatology, University Hospital Zurich, Zurich, Switzerland
    Adv Exp Med Biol 701:21-5. 2011
  5. doi request reprint Progress of near-infrared spectroscopy and topography for brain and muscle clinical applications
    Martin Wolf
    University Hospital Zurich, Clinic of Neonatology, Biomedical Optics Research Laboratory, 8091 Zurich, Switzerland
    J Biomed Opt 12:062104. 2007
  6. doi request reprint Multimodal recording of brain activity in term newborns during photic stimulation by near-infrared spectroscopy and electroencephalography
    Martin Biallas
    University Hospital Zurich, Biomedical Optics Research Laboratory, Division of Neonatology, CH 8091 Zurich, Switzerland
    J Biomed Opt 17:086011-1. 2012
  7. doi request reprint Trial-to-trial variability differentiates motor imagery during observation between low versus high responders: a functional near-infrared spectroscopy study
    Lisa Holper
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    Behav Brain Res 229:29-40. 2012
  8. ncbi request reprint The influence of the timing of cord clamping on postnatal cerebral oxygenation in preterm neonates: a randomized, controlled trial
    Oskar Baenziger
    Department of Neonatology, University Hospital Zurich, Zurich, Switzerland
    Pediatrics 119:455-9. 2007
  9. doi request reprint Extension of mental preparation positively affects motor imagery as compared to motor execution: a functional near-infrared spectroscopy study
    Lisa Holper
    Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, Switzerland
    Cortex 48:593-603. 2012
  10. ncbi request reprint Reproducibility and sensitivity of detecting brain activity by simultaneous electroencephalography and near-infrared spectroscopy
    Martin Biallas
    Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, 8091 Zurich, Switzerland
    Exp Brain Res 222:255-64. 2012

Collaborators

Detail Information

Publications67

  1. doi request reprint Advances in near-infrared spectroscopy to study the brain of the preterm and term neonate
    Martin Wolf
    Biomedical Optics Research Laboratory, Clinic of Neonatology, University Hospital Zurich, Frauenklinikstr 10, 8091 Zurich, Switzerland
    Clin Perinatol 36:807-34, vi. 2009
    ..Imaging of brain function needs very well defined protocols for sensory stimulation as well as signal analysis to provide meaningful results...
  2. pmc A phase II randomized clinical trial on cerebral near-infrared spectroscopy plus a treatment guideline versus treatment as usual for extremely preterm infants during the first three days of life (SafeBoosC): study protocol for a randomized controlled tria
    Simon Hyttel-Sorensen
    Department of Neonatology, Rigshospitalet, Blegdamsvej 9, Copenhagen DK 2100, Denmark
    Trials 14:120. 2013
    ....
  3. pmc 500 ml of blood loss does not decrease non-invasive tissue oxygen saturation (StO2) as measured by near infrared spectroscopy - A hypothesis generating pilot study in healthy adult women
    Victor Jeger
    Department of Emergency Medicine, University and University Hospital of Berne Inselspital, Berne, Switzerland
    J Trauma Manag Outcomes 4:5. 2010
    ..Using a commercially available device, we investigated whether clinically relevant blood loss of 500 ml in healthy volunteers can be detected by changes in StO2 after a standardized ischemic event...
  4. doi request reprint Speech therapy changes blood circulation and oxygenation in the brain and muscle: a near-infrared spectrophotometry study
    Martin Wolf
    Clinic of Neonatology, University Hospital Zurich, Zurich, Switzerland
    Adv Exp Med Biol 701:21-5. 2011
    ..The results show that ATS has effects on important physiological parameters, i.e., it leads to a decrease in cerebral blood flow during recitation and to brain activation thereafter...
  5. doi request reprint Progress of near-infrared spectroscopy and topography for brain and muscle clinical applications
    Martin Wolf
    University Hospital Zurich, Clinic of Neonatology, Biomedical Optics Research Laboratory, 8091 Zurich, Switzerland
    J Biomed Opt 12:062104. 2007
    ..Moreover, it discusses strengths and limitations and gives an outlook into the "bright" future...
  6. doi request reprint Multimodal recording of brain activity in term newborns during photic stimulation by near-infrared spectroscopy and electroencephalography
    Martin Biallas
    University Hospital Zurich, Biomedical Optics Research Laboratory, Division of Neonatology, CH 8091 Zurich, Switzerland
    J Biomed Opt 17:086011-1. 2012
    ..We conclude that NIRS is an promising tool to study cognitive activation and development of the brain. For clinical application, however, the sensitivity and reproducibility on an individual level needs to be improved...
  7. doi request reprint Trial-to-trial variability differentiates motor imagery during observation between low versus high responders: a functional near-infrared spectroscopy study
    Lisa Holper
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    Behav Brain Res 229:29-40. 2012
    ..Although the sources of trial-to-trial variability remain unknown, we suggest that they may contribute to future neurofeedback applications...
  8. ncbi request reprint The influence of the timing of cord clamping on postnatal cerebral oxygenation in preterm neonates: a randomized, controlled trial
    Oskar Baenziger
    Department of Neonatology, University Hospital Zurich, Zurich, Switzerland
    Pediatrics 119:455-9. 2007
    ..Our goal was to investigate the effect of placentofetal transfusion on cerebral oxygenation in preterm infants by near-infrared spectroscopy...
  9. doi request reprint Extension of mental preparation positively affects motor imagery as compared to motor execution: a functional near-infrared spectroscopy study
    Lisa Holper
    Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, Switzerland
    Cortex 48:593-603. 2012
    ..Especially neurorehabilitation and neural interfaces may benefit from utilizing positive interactions between mental preparation and MI performance...
  10. ncbi request reprint Reproducibility and sensitivity of detecting brain activity by simultaneous electroencephalography and near-infrared spectroscopy
    Martin Biallas
    Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, 8091 Zurich, Switzerland
    Exp Brain Res 222:255-64. 2012
    ..The reproducibility in single subjects was low. For the EEG, the sensitivity was 86.4 % and the reproducibility 57.1 %. An optical neuronal signal was not detected, although novel filtering considerably reduced noise...
  11. ncbi request reprint Optical properties, physiologic parameters and tissue composition of the human uterine cervix as a function of hormonal status
    Bettina Matzinger
    Department of Obstetrics and Gynecology, University Hospital of Zurich, Zurich, Switzerland
    Lasers Med Sci 24:561-6. 2009
    ..Cervical softening during menstrual bleeding seems to be different from cervical softening for labor...
  12. ncbi request reprint Multifrequency frequency-domain spectrometer for tissue analysis
    Sonja Spichtig
    Clinic of Neonatology, University Hospital Zurich, 8091 Zurich, Switzerland
    Rev Sci Instrum 80:024301. 2009
    ..Future work will focus on resolving the lipid component...
  13. ncbi request reprint Hemodynamic response to visual stimulation in newborn infants using functional near-infrared spectroscopy
    Tanja Karen
    Clinic of Neonatology, University Hospital Zurich, Switzerland
    Hum Brain Mapp 29:453-60. 2008
    ..The increase in O(2)Hb and the simultaneous decrease in HHb during stimulation suggest an increase in cerebral blood flow (CBF) that overcompensates for the increased oxygen consumption (CMRO(2)) in the activated cortical area...
  14. doi request reprint Near-infrared spectroscopy measurements of cerebral oxygenation in newborns during immediate postnatal adaptation
    Jean Claude Fauchere
    Department Obstetrics and Gynecology, Clinic of Neonatology, University Hospital Zurich, Zurich, Switzerland
    J Pediatr 156:372-6. 2010
    ..In view of growing concerns regarding the optimal supplementation of oxygen at birth, we measured cerebral oxygenation during the first minutes of life...
  15. ncbi request reprint NIRS measurement of venous oxygen saturation in the adult human head
    Derek W Brown
    Clinic for Neonatology, University Hospital, Frauenklinikstr 10, 8091 Zurich, Switzerland
    Adv Exp Med Biol 578:251-6. 2006
  16. pmc Detection of motor execution using a hybrid fNIRS-biosignal BCI: a feasibility study
    Raphael Zimmermann
    Rehabilitation Engineering Lab, ETH Zurich, Zurich, Switzerland
    J Neuroeng Rehabil 10:4. 2013
    ..An approach that allowed for individually tuned classifier topologies was opted for. This promises to be a first step towards a novel form of active movement therapy that could be operated and controlled by paretic patients...
  17. ncbi request reprint Do slow and small oxygen changes affect the cerebral cytochrome oxidase redox state measured by near-infrared spectroscopy?
    Martin Wolf
    Clinic for Neonatology, University Hospital, Frauenklinikstr 10, CH 8091, Zurich
    Adv Exp Med Biol 578:245-50. 2006
  18. pmc Nocturnal cerebral hemodynamics in snorers and in patients with obstructive sleep apnea: a near-infrared spectroscopy study
    Fabio Pizza
    Department of Neurology, University Hospital Zurich, Switzerland
    Sleep 33:205-10. 2010
    ..Aim of the present study is the investigation of cerebral hemodynamics in patients with SDB of variable severity using near-infrared spectroscopy (NIRS)...
  19. doi request reprint Understanding inverse oxygenation responses during motor imagery: a functional near-infrared spectroscopy study
    Lisa Holper
    Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    Eur J Neurosci 33:2318-28. 2011
    ..Our study presents a first effort in this direction, indicating that MI-related inverse Δ[O(2) Hb] responses are correlated, first, with task mode and, secondly, with task complexity...
  20. ncbi request reprint Error detection and error memory in spatial navigation as reflected by electrodermal activity
    Lisa Holper
    Biomedical Optics Research Laboratory BORL, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
    Cogn Process 14:377-89. 2013
    ....
  21. ncbi request reprint Brain tissue oxygen saturation increases during the night in adolescents
    Andreas Jaakko Metz
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
    Adv Exp Med Biol 789:113-9. 2013
    ..The slope of the regression line was 0.37 ± 0.13 % h(-1) leading to a similar increase of StO2 in the course of sleep. This may be interpreted as a reduced oxygen consumption or energy metabolism after sleep. ..
  22. doi request reprint Between-brain coherence during joint n-back task performance: a two-person functional near-infrared spectroscopy study
    Lukas Dommer
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    Behav Brain Res 234:212-22. 2012
    ..Our study demonstrates the potential of simultaneously assessing cerebral hemodynamic responses for various two-person experimental paradigms and research areas where interpersonal performances are involved...
  23. doi request reprint Between-brain connectivity during imitation measured by fNIRS
    Lisa Holper
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    Neuroimage 63:212-22. 2012
    ..Overall, the results of the present study demonstrate the potential of simultaneously assessing brain hemodynamics in interacting subjects in several research areas where social interactions are involved...
  24. pmc Single-trial classification of motor imagery differing in task complexity: a functional near-infrared spectroscopy study
    Lisa Holper
    Biomedical Optics Research Laboratory BORL, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, Zurich, Switzerland
    J Neuroeng Rehabil 8:34. 2011
    ..e. simple and complex MI tasks...
  25. doi request reprint Reproducibility of cerebral tissue oxygen saturation measurements by near-infrared spectroscopy in newborn infants
    Carmen Jenny
    University Hospital Zurich, Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, 8091 Zurich, Switzerland
    J Biomed Opt 16:097004. 2011
    ..The novel sensor geometry leads to considerably more precise measurements compared to previous studies with, e.g., ∼5% reproducibility for the NIRO 300. The novel StO(2) values hence have a higher clinical relevance...
  26. pmc Changes in cerebral oxygenation during early postnatal adaptation in newborns delivered by vacuum extraction measured by near-infrared spectroscopy
    Tanja Karen
    Division of Neonatology, Department Obstetrics and Gynecology, University Hospital Zurich, Frauenklinikstrasse 10, Zurich CH 8091, Switzerland
    BMC Pediatr 14:21. 2014
    ..The aim was to study cerebral tissue oxygenation during postnatal adaptation in these infants using near-infrared spectroscopy...
  27. doi request reprint The effect of sudden depressurization on pilots at cruising altitude
    Thomas Muehlemann
    Department of Obstetrics and Gynecology, University Hospital Zurich, Zurich, Switzerland
    Adv Exp Med Biol 765:177-83. 2013
    ..The inter-subject variability was high, for SaO(2) depending on the subjects' ability to preoxygenate before the depressurization. The drop in StO(2) was lower than the one in SaO(2) maybe due to compensation in blood flow...
  28. doi request reprint The effect of basic assumptions on the tissue oxygen saturation value of near infrared spectroscopy
    Andreas Jaakko Metz
    University Hospital Zurich, Zurich, Switzerland
    Adv Exp Med Biol 765:169-75. 2013
    ..49 ± 5.11%. Our results indicate that StO(2) depends strongly on the assumptions. Since StO(2) is an absolute value, comparability between different studies is reduced if the assumptions of the algorithms are not published...
  29. doi request reprint The effect of venous and arterial occlusion of the arm on changes in tissue hemodynamics, oxygenation, and ultra-weak photon emission
    Felix Scholkmann
    University Hospital Zurich, Zurich, Switzerland
    Adv Exp Med Biol 765:257-64. 2013
    ..In conclusion, the present study revealed new insights into the interplay between HD, OX, and UPE and opens up new questions that have to be addressed by future studies...
  30. doi request reprint Assessment of intermittent UMTS electromagnetic field effects on blood circulation in the human auditory region using a near-infrared system
    Sonja Spichtig
    Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, Switzerland
    Bioelectromagnetics 33:40-54. 2012
    ..84 bpm) at 1.8 W/kg than for sham exposure. The other parameters showed no significant effects. Our results suggest that intermittent exposure to UMTS-EMF has small short- and medium-term effects on cerebral blood circulation and HR...
  31. ncbi request reprint The influence of a clear layer on near infrared spectrophotometry: comparison of measurements in a liquid neonatal head phantom to infants in vivo
    Martin Wolf
    Clinic for Neonatology, University Hospital, Frauenklinikstr 10, 8091 Zurich, Switzerland
    Adv Exp Med Biol 530:75-84. 2003
    ..89, r2 = 0.62). Thus an adverse effect of the CSF layer on TOI measurements can be excluded for infants. The CSF layer is not modelled correctly in the phantom...
  32. doi request reprint Motor imagery in response to fake feedback measured by functional near-infrared spectroscopy
    Lisa Holper
    Biomedical Optics Research Laboratory, Clinic of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    Neuroimage 50:190-7. 2010
    ..We present fNIRS data of MI performance in response to different feedback conditions indicating that there exist distinct oxygenation patterns. These data may contribute to the development of fNIRS controlled feedback systems...
  33. doi request reprint Precision of cerebral oxygenation and hemoglobin concentration measurements in neonates measured by near-infrared spectroscopy
    Sandra Jasminder Arri
    Department of Obstetrics and Gynecology, University Hospital Zurich, Clinic of Neonatology, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    J Biomed Opt 16:047005. 2011
    ..This is not always the case. Our aim is to assess the impact of tissue homogeneity (TH) on the precision of NIRS measurements in neonates...
  34. doi request reprint A review on continuous wave functional near-infrared spectroscopy and imaging instrumentation and methodology
    Felix Scholkmann
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital Zurich, 8091 Zurich, Switzerland
    Neuroimage 85:6-27. 2014
    ..It seems likely that fNIRI will become a clinical tool in the foreseeable future, which will enable diagnosis in single subjects. ..
  35. doi request reprint Cerebral hemodynamic changes in stroke during sleep-disordered breathing
    Fabio Pizza
    Department of Neurology, University Hospital Zurich, Zurich, Switzerland
    Stroke 43:1951-3. 2012
    ..Sleep-disordered breathing (SDB) negatively impacts stroke outcome. Near-infrared spectroscopy showed the acute cerebral hemodynamic effects of SDB...
  36. ncbi request reprint Frequency domain near-infrared spectroscopy of the uterine cervix during cervical ripening
    Ana Baños
    Department of Obstetrics and Gynecology, University Hospital Zurich, Zurich, Switzerland
    Lasers Surg Med 39:641-6. 2007
    ..We used frequency domain near-infrared spectroscopy (FD-NIRS) to non-invasively investigate the changes of the optical properties (i.e., absorption and scattering of light) in the uterine cervix during drug-induced cervical ripening...
  37. ncbi request reprint Wireless miniaturized in-vivo near infrared imaging
    Thomas Muehlemann
    University Hospital Zurich, Clinic of Neonatology, 8091 Zurich, Switzerland
    Opt Express 16:10323-30. 2008
    ..It was validated by measuring muscle oxygenation in a blood-flow occlusion experiment and brain activity in adults...
  38. ncbi request reprint Optical properties of the breast during spontaneous and birth control pill-mediated menstrual cycles
    Michèle C Stahel
    Gynecology Clinic, University Hospital, Zurich, Switzerland
    Lasers Med Sci 24:901-7. 2009
    ..As opposed to the menstrual cycles of persons using oral contraception, spontaneous menstrual cycles exhibit biphasic variations of tissue perfusion parameters. These findings are important for the investigation of mastodynia...
  39. ncbi request reprint Physiological effects of mechanical pain stimulation at the lower back measured by functional near-infrared spectroscopy and capnography
    Lisa Holper
    Biomedical Optics Research Laboratory BORL, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    J Integr Neurosci 13:121-42. 2014
    ..Together, our data suggest that the combined fNIRS-capnography approach has potential for further development as pain monitoring method, such as for evaluating clinical pain treatment. ..
  40. ncbi request reprint The effect of inner speech on arterial CO2 and cerebral hemodynamics and oxygenation: a functional NIRS study
    Felix Scholkmann
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital Zurich, Zurich, 8091, Switzerland
    Adv Exp Med Biol 789:81-7. 2013
    ..Thus, the cerebral changes cannot solely be explained by PaCO2. ..
  41. pmc Testing the potential of a virtual reality neurorehabilitation system during performance of observation, imagery and imitation of motor actions recorded by wireless functional near-infrared spectroscopy (fNIRS)
    Lisa Holper
    Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    J Neuroeng Rehabil 7:57. 2010
    ..This combination is particularly appealing from a rehabilitation perspective as it may allow minimally constrained monitoring during neurorehabilitative training...
  42. doi request reprint An approach to using recombinant erythropoietin for neuroprotection in very preterm infants
    Jean Claude Fauchere
    Clinic of Neonatology, University Hospital Zurich, Zurich, Switzerland
    Pediatrics 122:375-82. 2008
    ..We investigated whether administration of high-dose recombinant human erythropoietin to very preterm infants shortly after birth and subsequently during the first 2 days is safe in terms of short-term outcome...
  43. doi request reprint Task complexity relates to activation of cortical motor areas during uni- and bimanual performance: a functional NIRS study
    Lisa Holper
    Institute of Neuroinformatics, University of Zurich and ETH Zurich, Zurich, Switzerland
    Neuroimage 46:1105-13. 2009
    ..The study aims to contribute to the establishment of fNIRS as a neuroimaging method to assess hand motor function in clinical settings where traditional neuroimaging methods cannot be applied...
  44. ncbi request reprint The relationship between sympathetic nervous activity and cerebral hemodynamics and oxygenation: A study using skin conductance measurement and functional near-infrared spectroscopy
    Lisa Holper
    Biomedical Optics Research Laboratory BORL, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland Electronic address
    Behav Brain Res 270:95-107. 2014
    ..Our findings are relevant for several neuroscientific research areas seeking to evaluate the interplay between cortical and peripheral affective performance. ..
  45. ncbi request reprint Measuring tissue hemodynamics and oxygenation by continuous-wave functional near-infrared spectroscopy--how robust are the different calculation methods against movement artifacts?
    Felix Scholkmann
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital Zurich, 8091 Zurich, Switzerland
    Physiol Meas 35:717-34. 2014
    ..We found that each method induces MAs to a different degree, and that MD methods are more robust against MAs than SD methods. ..
  46. doi request reprint Cerebral hemodynamic and oxygenation changes induced by inner and heard speech: a study combining functional near-infrared spectroscopy and capnography
    Felix Scholkmann
    University of Bern, Institute of Complementary Medicine IKOM, 3010 Bern, SwitzerlandbUniversity Hospital Zurich, Division of Neonatology, Biomedical Optics Research Laboratory, 8091 Zurich, Switzerland
    J Biomed Opt 19:17002. 2014
    ..In conclusion, StO2, [O2Hb], [HHb], and [tHb] are affected by interplay of both PaCO2 reactivity and functional brain activity...
  47. ncbi request reprint Comparison of three methods to measure absolute cerebral hemoglobin concentration in neonates by near-infrared spectrophotometry
    Martin Wolf
    University Hospital, Clinic for Neonatology, 8091 Zurich, Switzerland
    J Biomed Opt 7:221-7. 2002
    ..493 and 0.406, respectively). The three methods (tHbg, tHbo, and tHbgo) give systematically different tHb readings and large intersubject variability...
  48. ncbi request reprint Absolute frequency-domain pulse oximetry of the brain: methodology and measurements
    Martin Wolf
    Clinic for Neonatology, University Hospital, Frauenklinikstr 10, 8091 Zurich, Switzerland
    Adv Exp Med Biol 530:61-73. 2003
    ..fdSaO2 and poSaO2 agree very well (mean difference: -1.2 +/- 2.6%). Changes in SO2 were systematically smaller than in fdSaO2 or poSaO2 probably due to autoregulation. The measurements with 4 and 8 wavelengths had comparable quality...
  49. doi request reprint Periodic leg movements during sleep and cerebral hemodynamic changes detected by NIRS
    Fabio Pizza
    Department of Neurology, University Hospital Zurich, Switzerland
    Clin Neurophysiol 120:1329-34. 2009
    ..Near infrared spectroscopy (NIRS) assesses hemodynamic changes linked to hemispheric/cortical activity. We applied NIRS to test whether cerebral hemodynamic alterations accompany PLMS...
  50. doi request reprint Evaluation of a textile-based near infrared spectroscopy system in calf muscle oxygenation measurements
    Nassim Nasseri
    Biomedical Optics Research Laboratory, Division of Neonatology, University Hospital of Zurich, Frauenklinikstrasse 10, 8091, Zurich, Switzerland
    Adv Exp Med Biol 812:355-60. 2014
    ..01 mL/100 g/min, hemoglobin flow (HF) was 0.93 ± 0.48 μmol/100 mL/min, and blood flow (BF) was 2.01 ± 1.04 mL/100 mL/min. Our results are in good agreement with the literature, but the TexNIRS enables a much higher level of comfort. ..
  51. doi request reprint fNIRS derived hemodynamic signals and electrodermal responses in a sequential risk-taking task
    Lisa Holper
    Biomedical Optics Research Laboratory BORL, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland Chair of Decision Theory and Behavioral Game Theory, Department of Humanities, Social and Political Sciences, ETH Zurich, Clausiusstrasse 50, 8092 Zurich, Switzerland Electronic address
    Brain Res 1557:141-54. 2014
    ....
  52. ncbi request reprint Detection of hyperbilirubinaemia in jaundiced full-term neonates by eye or by bilirubinometer?
    Peter Szabo
    Neonatology Clinic, University Hospital, Frauenklinikstrasse 10, 8091 Zurich, Switzerland
    Eur J Pediatr 163:722-7. 2004
    ..If these respective thresholds are exceeded, serum bilirubin concentrations should be measured...
  53. doi request reprint Comparison of functional near-infrared spectroscopy and electrodermal activity in assessing objective versus subjective risk during risky financial decisions
    Lisa Holper
    Biomedical Optics Research Laboratory BORL, Division of Neonatology, University Hospital Zurich, Frauenklinikstrasse 10, 8091 Zurich, Switzerland Electronic address
    Neuroimage 84:833-42. 2014
    ..The findings suggest that fNIRS could be a useful method for studying risk behavior in financial decisions. ..
  54. ncbi request reprint Complementary and alternative medicine costs - a systematic literature review
    Stefanie Maxion-Bergemann
    PanMedion Foundation, Zurich, Switzerland
    Forsch Komplementmed 13:42-5. 2006
    ..The aim of this literature review, performed within the framework of the Swiss governmental Program of Evaluation of Complementary Medicine (PEK), was to investigate costs of complementary and alternative medicine (CAM)...
  55. doi request reprint In vivo functional near-infrared spectroscopy measures mood-modulated cerebral responses to a positive emotional stimulus in sheep
    Thomas Muehlemann
    Centre for Proper Housing of Ruminants and Pigs, Federal Veterinary Office, Agroscope Reckenholz Tanikon Research Station ART, Ettenhausen, Switzerland
    Neuroimage 54:1625-33. 2011
    ..This contradicts the common assumption that negative mood generally taints reactions to emotional stimuli. Our results also demonstrate the potential of fNIRS for assessing affective states in freely moving animals...
  56. ncbi request reprint Different time evolution of oxyhemoglobin and deoxyhemoglobin concentration changes in the visual and motor cortices during functional stimulation: a near-infrared spectroscopy study
    Martin Wolf
    Department of Physics, University of Illinois at Urbana Champaign, 61801 3080, USA
    Neuroimage 16:704-12. 2002
    ..There is evidence that the CMRO(2) increases substantially in the visual cortex, while this is not the case for the motor cortex...
  57. ncbi request reprint Noninvasive determination of the optical properties of adult brain: near-infrared spectroscopy approach
    JeeHyun Choi
    Laboratory for Fluorescence Dynamics, Department of Physics, University of Illinois at Urbana Champaign, 1110 W Green Street, Urbana, IL 61801 3080, USA
    J Biomed Opt 9:221-9. 2004
    ..The optical parameters obtained from the two-layer model agreed very well with those measured by the multidistance method...
  58. ncbi request reprint Localized irregularities in hemoglobin flow and oxygenation in calf muscle in patients with peripheral vascular disease detected with near-infrared spectrophotometry
    Ursula Wolf
    Laboratory for Fluorescence Dynamics, Department of Physics, University of Illinois at Urbana Champaign, USA
    J Vasc Surg 37:1017-26. 2003
    ....
  59. ncbi request reprint Functional frequency-domain near-infrared spectroscopy detects fast neuronal signal in the motor cortex
    Martin Wolf
    Laboratory for Fluorescence Dynamics, Department of Physics, University of Illinois at Urbana Champaign, 61801 3080, USA
    Neuroimage 17:1868-75. 2002
    ..6. The advantage of this noninvasive technique with respect to electrical recording is that it is able to detect neuronal activity with the relatively high spatial resolution of 8 mm...
  60. ncbi request reprint Age-correlated changes in cerebral hemodynamics assessed by near-infrared spectroscopy
    Larisa P Safonova
    Laboratory for Fluorescence Dynamics, Department of Physics, University of Illinois at Urbana Champaign, 184 Loomis Lab, 1110 West Green Street, Urbana 61801, USA
    Arch Gerontol Geriatr 39:207-25. 2004
    ..In this investigation NIRS methodology allowed detection of age-correlated changes in cerebral oxygenation and hemodynamics. Other variables, such as snoring or posture impacted the observations in our group of healthy volunteers...
  61. ncbi request reprint Measurement of brain activity by near-infrared light
    Enrico Gratton
    University of Illinois at Urbana Champaign, Laboratory for Fluorescence Dynamics, 110 W Green Street, Urbana, Illinois 61801, USA
    J Biomed Opt 10:11008. 2005
    ..We also show how near-IR methods can be used to study the underlying physiology of functional MRI signals...
  62. ncbi request reprint Photonic textiles for pulse oximetry
    Markus Rothmaier
    Empa, Laboratory for Protection and Physiology, Lerchenfeldstrasse 5, 9014 St Gallen, Switzerland
    Opt Express 16:12973-86. 2008
    ..Our results show that textile-based oximetry is feasible with sufficient data quality and its potential as a wearable health monitoring device is promising...
  63. ncbi request reprint Bronchioloalveolar carcinoma: sonographic pattern of 'pneumonia'
    Christian Gorg
    Zentrum fur Innere Medizin, Klinik fur Hamatologie Onkologie, Philipps Universitat Marburg, Baldingerstrasse, 35043, Marburg, Germany
    Eur J Ultrasound 15:109-17. 2002
    ..the sonographic pattern of bacterial pneumonia is predominantly well known and characterized by an air bronchogram, a marked vascularity on color Doppler sonography, and a high-impedance arterial flow pattern on Doppler spectral analysis...
  64. ncbi request reprint Mapping of hemodynamics on the human calf with near infrared spectroscopy and the influence of the adipose tissue thickness
    Ursula Wolf
    Laboratory for Fluorescence Dynamics, Department of Physics, University of Illinois at Urbana Champaign, 1110 W Green St, Urbana, IL 61801 3080, USA
    Adv Exp Med Biol 510:225-30. 2003
    ....
  65. ncbi request reprint Regional differences of hemodynamics and oxygenation in the human calf muscle detected with near-infrared spectrophotometry
    Ursula Wolf
    Laboratory for Fluorescence Dynamics, Biomedical Engineering Department, University of California Irvine, 3120 Natural Sciences II Bldg, Irvine, CA 92697 2715, USA
    J Vasc Interv Radiol 18:1094-101. 2007
    ..This, however, may not be the case. The study was performed to investigate whether this hypothesis is true for hemodynamics and oxygenation in the healthy human calf muscle at rest...
  66. ncbi request reprint Variability of cerebral hemoglobin concentration in very preterm infants during the first 6 hours of life
    Kurt von Siebenthal
    Adv Exp Med Biol 566:91-7. 2005
    ..The major portion of the large variability of early cHbc registrations can be attributed to physiological factors...
  67. ncbi request reprint Fast cerebral functional signal in the 100-ms range detected in the visual cortex by frequency-domain near-infrared spectrophotometry
    Martin Wolf
    Laboratory for Fluorescence Dynamics, Department of Physics, University of Illinois at Urbana Champaign, Urbana, Illinois, USA
    Psychophysiology 40:521-8. 2003
    ..Our results also indicate that the brain responds differently to a single and double (forth and back) reversal of the checkerboard, with a stronger reaction upon the double reversal...