Research Topics
| Jyrki AhveninenSummaryAffiliation: Harvard University Country: USA Publications
Research Grants
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Detail Information
Publications
Dissociable influences of auditory object vs. spatial attention on visual system oscillatory activityJyrki Ahveninen
Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts, United States of America
PLoS ONE 7:e38511. 2012..The alpha modulations could be interpreted to reflect enhanced crossmodal inhibition of feature-specific visual pathways and adjacent audiovisual association areas during "what" vs. "where" auditory attention...
Inherited auditory-cortical dysfunction in twin pairs discordant for schizophreniaJyrki Ahveninen
Department of Radiology, Harvard Medical School Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
Biol Psychiatry 60:612-20. 2006..We used magnetoencephalography (MEG) and electroencephalography (EEG) to investigate the inheritance of auditory-cortical deficiencies in twin pairs discordant for schizophrenia...
Task-modulated "what" and "where" pathways in human auditory cortexJyrki Ahveninen
Harvard Medical School Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, CNY 149 13th Street, Charlestown, MA 02129, USA
Proc Natl Acad Sci U S A 103:14608-13. 2006..This finding suggests that selective-attention effects are feature-specific in the human nonprimary auditory cortex and that they arise from enhanced tuning of receptive fields of task-relevant neuronal populations...
MRI-constrained spectral imaging of benzodiazepine modulation of spontaneous neuromagnetic activity in human cortexJyrki Ahveninen
Massachusetts General Hospital Massachusetts Institute of Technology Harvard Medical School Athinoula A Martinos Center for Biomedical Imaging, CNY149 13th Street, Charlestown, MA 02129, USA
Neuroimage 35:577-82. 2007..Anatomically constrained spectral imaging displays the cortical loci of drug effects on oscillatory brain activity, providing a novel tool for human pharmacological neuroimaging...
Brain networks of novelty-driven involuntary and cued voluntary auditory attention shiftingSamantha Huang
Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts, United States of America
PLoS ONE 7:e44062. 2012..Finally, novels and targets activated much wider areas of superior temporal auditory cortices than shifting cues...
Onset timing of cross-sensory activations and multisensory interactions in auditory and visual sensory corticesTommi Raij
MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Bldg 149, 13 St, Charlestown, MA, USA
Eur J Neurosci 31:1772-82. 2010..Audiovisual interactions started at 85 ms in the left auditory, 80 ms in the right auditory and 74 ms in the visual cortex, i.e., 3-21 ms after inputs from the two modalities converged...
Neuronal representations of distance in human auditory cortexNorbert Kopco
Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Harvard Medical School Massachusetts General Hospital, Charlestown, MA 02129, USA
Proc Natl Acad Sci U S A 109:11019-24. 2012....
Attention-driven auditory cortex short-term plasticity helps segregate relevant sounds from noiseJyrki Ahveninen
Harvard Medical School Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA
Proc Natl Acad Sci U S A 108:4182-7. 2011..In conclusion, a simple gain model alone cannot explain auditory selective attention. In nonprimary auditory cortices, attention-driven short-term plasticity retunes neurons to segregate relevant sounds from noise...
Human posterior auditory cortex gates novel sounds to consciousnessIiro P Jaaskelainen
Massachusetts General Hospital, Massachusetts Institute of Technology, Harvard Medical School, Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
Proc Natl Acad Sci U S A 101:6809-14. 2004..Our converging findings suggest that transient adaptation of feature-specific neurons within human posterior auditory cortex filters superfluous sounds from entering one's awareness...
Parallel input makes the brain run fasterTommi Raij
MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
Neuroimage 40:1792-7. 2008..This arrangement could also allow very early top-down modulation of the bottom-up stream of sensory information...
EEG/(f)MRI measurements at 7 Tesla using a new EEG cap ("InkCap")Christos E Vasios
Harvard Medical School, Massachusetts General Hospital, Athinoula A Martinos Center for Biomedical Imaging, Building 149, 13th Street, Charlestown 02129, USA
Neuroimage 33:1082-92. 2006..Our results show that the InkCap technology considerably improves the quality of both EEG and (f)MRI during concurrent measurements even at 7 T...
Enhanced magnetic auditory steady-state response in early Alzheimer's diseaseDaria Osipova
Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Finland
Clin Neurophysiol 117:1990-5. 2006..We studied the auditory steady-state response (SSR) which represents the net effect of entrained background activity and superimposed cortical evoked responses, in AD patients and healthy controls...
Impaired pre-attentive auditory processing in opioid dependence with and without benzodiazepine co-dependence revealed by combined magnetoencephalography and electroencephalographyReetta Kivisaari
Medical Imaging Centre, Box 281, Helsinki University Central Hospital, 00029 HUS, Finland
Prog Neuropsychopharmacol Biol Psychiatry 31:1378-86. 2007..There were no group differences in EEG amplitude measures. In conclusion, our results suggest delayed pre-attentive auditory processing of novel information in opioid dependence. Benzodiazepine co-dependence modulated N1m response...
Short-term plasticity in auditory cognitionIiro P Jaaskelainen
Laboratory of Computational Engineering, Helsinki University of Technology, FIN 02015 TKK, Espoo, Finland
Trends Neurosci 30:653-61. 2007....
Aging and cholinergic modulation of the transient magnetic 40-Hz auditory responseJyrki Ahveninen
Cognitive Brain Research Unit, Department of Neurology, University of Helsinki, FIN 00014 Helsinki, Finland
Neuroimage 15:153-8. 2002..In sum, the transient magnetic 40-Hz auditory response may be useful in studies on brain cholinergic deficits in elderly subjects...
Cholinergic modulation of preattentive auditory processing in agingEero Pekkonen
Department of Neurology, University of Helsinki, PO Box 340, FIN 00029 HUS, Finland
Neuroimage 27:387-92. 2005..The combined MEG/EEG measurements using particularly auditory N100 response might offer an objective tool to monitor cholinergic activity in aging and Alzheimer's disease (AD)...
Serotonin modulates early cortical auditory processing in healthy subjects: evidence from MEG with acute tryptophan depletionSeppo Kahkonen
BioMag Laboratory, Engineering Centre, Helsinki University Central Hospital, Helsinki, Finland
Neuropsychopharmacology 27:862-8. 2002..The results suggest that the neurotransmitter serotonin is involved in early auditory cortical processing. Further, the serotonin modulation may be different in males and females...
Dopamine modulates involuntary attention shifting and reorienting: an electromagnetic studySeppo Kahkonen
Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Helsinki, Finland
Clin Neurophysiol 113:1894-902. 2002..Dopaminergic function has been closely associated with attentional performance, but its precise role has remained elusive...
Impaired temporal lobe processing of preattentive auditory discrimination in schizophreniaEero Pekkonen
Department of Neurology, University of Helsinki, Finland
Schizophr Bull 28:467-74. 2002..These results suggest that patients with schizophrenia have impaired auditory processing in the temporal lobes underlying preattentive stimulus discrimination that is also selectively delayed in the left hemisphere...
Tryptophan depletion effects on EEG and MEG responses suggest serotonergic modulation of auditory involuntary attention in humansJyrki Ahveninen
Cognitive Brain Research Unit, Department of Psychology, P.O. Box 13, University of Helsinki, Helsinki, FIN-00014, Finland
Neuroimage 16:1052-61. 2002..In conclusion, the results suggest that decreased level of central 5-HT function after ATD may decrease involuntary attention shifting to task-irrelevant sound changes and thus modulate resource allocation to the task-relevant activity...
Auditory selective attention modulated by tryptophan depletion in humansJyrki Ahveninen
Department of Psychology, PO Box 9, FIN 00014 University of Helsinki, Helsinki, Finland
Neurosci Lett 340:181-4. 2003..The P50 latencies were increased after ATD, irrespective of attention. In conclusion, serotonin may regulate attentional modulation of early cortical stimulus processing...
Acute tryptophan depletion does not change somatosensory evoked magnetic fieldsSeppo Kahkonen
Cognitive Brain Research Unit, University of Helsinki, Helsinki, Finland
Psychopharmacology (Berl) 170:332-3. 2003..Serotonin is shown to regulate the activity of primary auditory cortex, but little is known about serotonin modulation of other sensory cortices...
Effects of scopolamine on MEG spectral power and coherence in elderly subjectsDaria Osipova
Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, P O Box 9 00014, Helsinki, Finland
Clin Neurophysiol 114:1902-7. 2003..In order to test the sensitivity of spectral power and hemispheric coherence to changes in cholinergic transmission, we evaluated quantitative magnetoencephalogram (MEG) after intravenous injection of scopolamine...
Effects of an acute D2-dopaminergic blockade on the somatosensory cortical responses in healthy humans: evidence from evoked magnetic fieldsJuha Huttunen
BioMag Laboratory, Medical Engineering Centre Department of Clinical Neurophysiology, Helsinki University Central Hospital, P O Box 340, FIN 00029 HUS
Neuroreport 14:1609-12. 2003..05). Responses arising from SII were not significantly changed. The results suggest that dopaminergic activity may be involved in modulating somatosensory processing after the initial stages of cortical activation...
Adaptation of neuromagnetic N1 responses to phonetic stimuli by visual speech in humansIiro P Jaaskelainen
Laboratory of Computational Engineering, Helsinki University of Technology, Espoo, P O Box 9203, Innopoli 2, Tekniikant 14, FIN 02015 HUT Finland
Neuroreport 15:2741-4. 2004..This suggests that seeing articulatory gestures of a speaker influences auditory speech perception by modulating the responsiveness of auditory-cortex neurons...
Serotonergic modulation of mismatch negativitySeppo Kahkonen
Cognitive Brain Research Unit, University of Helsinki, Finland
Psychiatry Res 138:61-74. 2005..No effects on P50 were observed. The present results suggest serotonergic modulation of preattentive auditory change detection, suggested to initiate involuntary attention shifting in the human brain...
Memory-based comparison process not attenuated by haloperidol: a combined MEG and EEG studyEero Pekkone
Department of Neurology, Medical Engineering Centre, Helsinki University Central Hospital, Finland
Neuroreport 13:177-81. 2002..Our results indicate that memory-based sound comparison and preceding cortical processing underlying stimulus detection are not attenuated by haloperidol, whereas haloperidol appears to accelerate preattentive sound comparison...
Acute tryptophan depletion decreases intensity dependence of auditory evoked magnetic N1/P2 dipole source activitySeppo Kahkonen
BioMag Laboratory, Engineering Centre, Helsinki University Central Hospital, P O Box 340, 00029 HUS, Finland
Psychopharmacology (Berl) 164:221-7. 2002..Depletion of tryptophan (TRP), a precursor for serotonin has been described to reduce serotonin content in brain of animals and humans...
Dysfunction in early auditory processing in major depressive disorder revealed by combined MEG and EEGSeppo Kahkonen
BioMag Laboratory, Helsinki University Central Hospital and the Cognitive Brain Research Unit, University of Helsinki, Helsinky, Finland
J Psychiatry Neurosci 32:316-22. 2007..We investigated whether MDD affects neural mechanisms of involuntary attention studied by auditory evoked potentials (AEPs) and auditory evoked magnetic fields (AEFs)...
Source estimation of spontaneous MEG oscillations in mild cognitive impairmentDaria Osipova
Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Helsinki, Finland
Neurosci Lett 405:57-61. 2006..Deficits in the distribution of oscillatory sources in the resting state are thus likely to occur at later stages of cognitive impairment than MCI...
Altered generation of spontaneous oscillations in Alzheimer's diseaseDaria Osipova
Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Finland
Neuroimage 27:835-41. 2005....
Research Grants
- Dynamic imaging of oscillatory brain networks controlling selective attentionJyrki Ahveninen; Fiscal Year: 2010..Our results may also support investigation of disorders with abnormal cognitive control functions. ..
- Dynamic imaging of oscillatory brain networks controlling selective attentionJyrki Ahveninen; Fiscal Year: 2011..Our results may also support investigation of disorders with abnormal cognitive control functions. ..
