Neural substrates in secondary somatosensory area for the perception of different tactile sensations
| Autor: | Wonhye Lee, Yong-An Chung, Yu Jin Jung, Stephanie D. Lee |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
medicine.diagnostic_test media_common.quotation_subject Stimulation Sensory system Stimulus (physiology) Somatosensory system Electronic Optical and Magnetic Materials 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Somatosensory evoked potential Perception medicine Computer Vision and Pattern Recognition Electrical and Electronic Engineering Functional magnetic resonance imaging Psychology Insula Neuroscience 030217 neurology & neurosurgery Software media_common |
| Zdroj: | International Journal of Imaging Systems and Technology. 26:85-91 |
| ISSN: | 0899-9457 |
| DOI: | 10.1002/ima.22160 |
| Popis: | This functional magnetic resonance imaging fMRI study investigated the secondary somatosensory area SII in humans, especially regarding the presence of distinctive spatial arrangements of neural subunits responding to different types of tactile stimuli. Ten healthy volunteers received four different sensory stimuli on the palmar side of the right hand-vibrotactile, pressure, warmth, and coolness. Based on group-level analysis of the fMRI data, all four of the somatosensory stimuli resulted in activations in the bilateral SII and insula as well as the SI contralateral to the stimulation. The spatial distribution of neural activations corresponding to each stimulus, as examined by cortical inflation technique, revealed significant overlaps, but also showed the differences in terms of its overall topology. The local maxima of the activation within the SII, corresponding to these stimuli, manifested distinctive spatial location. These results suggest that differential networks of the SII subregions are involved in the processing of the different nature of the tactile stimuli, while sharing common regions in the parietal operculum. |
| Databáze: | OpenAIRE |
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