Håkan W Olausson
- Feelings of warmth correlate with neural activity in right anterior insular cortexH Olausson
Centre for Research on Pain, McGill University, Montreal, Que, Canada
Neurosci Lett 389:1-5. 2005..These results, in conjunction with previous reports, suggest that the right anterior insular cortex is important for different types of thermal perception...
- Unmyelinated tactile afferents have opposite effects on insular and somatosensory cortical processingHåkan W Olausson
Department of Clinical Neurophysiology, Sahlgrenska University Hospital, Bla straket 7, S 41345 Gothenburg, Sweden
Neurosci Lett 436:128-32. 2008..In addition, CT stimulation evoked significant fMRI deactivation in somatosensory cortex in both subjects supporting the notion that CT is not a system for discriminative touch...
- Remarkable capacity for perception of the direction of skin pull in manH Olausson
Department of Physiology, Goteborg University, Box 432, S 405 30, Goteborg, Sweden
Brain Res 808:120-3. 1998..It was concluded that information about patterns of skin stretch is an important component of the somatosensory system that may contribute not only to kinaesthetic, but also to cutaneous sensations...
- The neurophysiology of unmyelinated tactile afferentsHakan Olausson
Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
Neurosci Biobehav Rev 34:185-91. 2010..CT fiber activation may also have a role in pain inhibition. This review outlines the growing evidence for unique properties and pathways of CT afferents...
- Functional role of unmyelinated tactile afferents in human hairy skin: sympathetic response and perceptual localizationHakan Olausson
Department of Clinical Neurophysiology, Sahlgrenska University Hospital, Bla straket 7, 413 45, Goteborg, Sweden
Exp Brain Res 184:135-40. 2008..The findings support the interpretation that the CT system is well suited to underpin affective rather than discriminative functions of tactile sensations...
- Unmyelinated tactile afferents signal touch and project to insular cortexH Olausson
Department of Clinical Neurophysiology, Sahlgrenska University Hospital, S 413 45 Goteborg, Sweden
Nat Neurosci 5:900-4. 2002..These findings identify CT as a system for limbic touch that may underlie emotional, hormonal and affiliative responses to caress-like, skin-to-skin contact between individuals...
- Cortical activation by tactile and painful stimuli in hemispherectomized patientsH Olausson
Department of Anaesthesia, Montreal Neurological Institute and Hospital, McGill University, Canada
Brain 124:916-27. 2001..The tactile-evoked ipsilateral S1 activation may be due to subcortical reorganization, since it was not observed in the normal subjects...
- Tactile directional sensibility: peripheral neural mechanisms in manH Olausson
Department of Physiology, Goteborg University, Goteborg, Sweden
Brain Res 866:178-87. 2000..The results suggest that SA1 and field units have the capacity to signal spatio-temporal information, whereas a population of SA2 units have the capacity to signal direction-specific information about changes in lateral skin stretch...
- Thermal and tactile sensory deficits and allodynia in a nerve-injured patient: a multimodal psychophysical and functional magnetic resonance imaging studyRobert K Hofbauer
Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
Clin J Pain 22:104-8. 2006..A case study was conducted to examine a patient with chronic neuropathic pain of the right foot following peripheral nerve injury and characterize associated sensory abnormalities...
- Cortical processing of tactile direction discrimination based on spatiotemporal cues in manLinda C Lundblad
Department of Clinical Neurophysiology, Sahlgrenska University Hospital, Bla straket 7, S 413 45 Gothenburg, Sweden
Neurosci Lett 501:45-9. 2011..Further, spatiotemporal TDD activated primary somatosensory cortex whereas a role for this area in processing of skin stretch TDD has not been demonstrated...
- Processing in prefrontal cortex underlies tactile direction discrimination: An fMRI study of a patient with a traumatic spinal cord lesionLinda C Lundblad
Department of Clinical Neurophysiology, Sahlgrenska University Hospital, Gothenburg, Sweden
Neurosci Lett 483:197-200. 2010..Thus, the patient's data, in conjunction with the previous results from healthy subjects, suggest that DLPFC processing is important for tactile decision making based on proper tactile input...
- Tactile functions after cerebral hemispherectomyH Backlund
Department of Physiology, Goteborg University, Sweden Institute of Clinical Neuroscience, Goteborg University, Sweden
Neuropsychologia 43:332-9. 2005..The reason for the high vulnerability of tactile directional sensibility may be that it depends on spatially and temporally precise afferent information processed in a distributed cortical network...
- Tactile directional sensibility and diabetic neuropathyU Norrsell
Department of Physiology, P O Box 432, Goteborg University, SE 40530 Goteborg, Sweden
Muscle Nerve 24:1496-502. 2001..Conduction velocity testing was almost comparably sensitive (80%) and cool sensitivity, comparably specific (85%) when calculated in the same manner...
- Anatomical and functional enhancements of the insula after loss of large primary somatosensory fibersMarta Ceko
Alan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada H3A 2T5
Cereb Cortex 23:2017-24. 2013..We, thus, demonstrated plasticity in networks involving the insular cortex following denervation of large-diameter somatosensory afferents. ..
- Central pain in a hemispherectomized patientH Olausson
Department of Anesthesia, McGill University, Montreal, Canada
Eur J Pain 5:209-17. 2001..The fMRI findings thus indicate that the central pain in this patient was served by brain structures implicated in normal pain processing. Possible pathophysiological mechanisms include plasticity as well as thalamic disinhibition...
- Sumatriptan (5-HT1B/1D-agonist) causes a transient allodyniaM Linde
Gothenburg Migraine Clinic, Gothenburg, Sweden
Cephalalgia 24:1057-66. 2004..This could explain at least some of the temporary sensory side-effects of triptans and warrants consideration in the interpretation of studies on migraine-induced allodynia...