Pulse-train stimulation of primary somatosensory cortex blocks pain perception in tail clip test

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Title
Pulse-train stimulation of primary somatosensory cortex blocks pain perception in tail clip test
Author(s)
Soohyun Lee; Eunjin Hwang; Dongmyeong Lee; Jee Hyun Choi
Publication Date
2017-04
Journal
EXPERIMENTAL NEUROBIOLOGY, v.26, no.2, pp.90 - 96
Publisher
The Korean Society for Brain and Neural Sciences
Abstract
Human studies of brain stimulation have demonstrated modulatory effects on the perception of pain. However, whether the primary somatosensory cortical activity is associated with antinociceptive responses remains unknown. Therefore, we examined the antinociceptive effects of neuronal activity evoked by optogenetic stimulation of primary somatosensory cortex. Optogenetic transgenic mice were subjected to continuous or pulse-train optogenetic stimulation of the primary somatosensory cortex at frequencies of 15, 30, and 40 Hz, during a tail clip test. Reaction time was measured using a digital high-speed video camera. Pulse-train optogenetic stimulation of primary somatosensory cortex showed a delayed pain response with respect to a tail clip, whereas no significant change in reaction time was observed with continuous stimulation. In response to the pulse-train stimulation, video monitoring and local field potential recording revealed associated paw movement and sensorimotor rhythms, respectively. Our results show that optogenetic stimulation of primary somatosensory cortex at beta and gamma frequencies blocks transmission of pain signals in tail clip test. © 2017 Experimental Neurobiology
URI
https://pr.ibs.re.kr/handle/8788114/3745
ISSN
1226-2560
Appears in Collections:
Center for Cognition and Sociality(인지 및 사회성 연구단) > Journal Papers (저널논문)
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