Jaw movement-related primary somatosensory cortical area in the rat

Highlights • Rostral part of the rat primary somatosensory cortex (S1) was electrically stimulated to evoke jaw-movements. • Low-frequency long-train (LFLT) stimuli of the rostral S1 evoked jaw-movements and activated jaw-opening (JO) muscles. • Most effective sites for LFLT stimuli overlapped those...

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Bibliographic Details
Published in:Neuroscience 2015-01, Vol.284, p.55-64
Main Authors: Uchino, K, Higashiyama, K, Kato, T, Haque, T, Sato, F, Tomita, A, Tsutsumi, K, Moritani, M, Yamamura, K, Yoshida, A
Format: Article
Language:English
Subjects:
Animals
Brain Mapping
Corticofugal
Electric Stimulation
Electromyography
Evoked Potentials, Somatosensory - physiology
Functional Laterality
Horseradish Peroxidase - metabolism
Intracortical microstimulation
Jaw - physiology
Male
Movement - physiology
Neurology
Primary somatosensory cortex
Rats
Rats, Wistar
Somatosensory Cortex - physiology
Trigeminal motoneuron
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Summary:Highlights • Rostral part of the rat primary somatosensory cortex (S1) was electrically stimulated to evoke jaw-movements. • Low-frequency long-train (LFLT) stimuli of the rostral S1 evoked jaw-movements and activated jaw-opening (JO) muscles. • Most effective sites for LFLT stimuli overlapped those for high-frequency short-train stimuli in the rostralmost S1. • The rostral S1 has projections to the lower brainstem areas including JO and jaw-closing premotoneurons. • Jaw-movements evoked by rostral S1 stimulation are likely controlled by activation of its projections to the premotoneurons.
ISSN:0306-4522
1873-7544
DOI:10.1016/j.neuroscience.2014.09.072