Document Detail

Contingent negative variations associated with command swallowing in humans.
MedLine Citation:
PMID:  19762277     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To clarify the role of the cerebral cortex in the swallowing movement, the difference between the waveforms of contingent negative variation (CNV) for the command swallowing and movement-related cortical potential (MRCP) obtained during the volitional swallowing task in humans was investigated. METHODS: Subjects were instructed to swallow their saliva as quickly as possible in response to a sound signal 4s after the onset of a self-paced breath holding in the command swallowing task or to swallow it while holding their breath for 4s in the volitional swallowing task. RESULTS: CNV and MRCP appeared at five recording areas 1.5 and 2.0s before the onset of the suprahyoid muscle activation determined by the electromyography (EMG) during the command swallowing and volitional swallowing tasks, respectively. The CNV amplitude during the command swallowing task was significantly higher than the MRCP amplitude during the volitional swallowing task (p<0.01). However, the suprahyoid muscle activities during both tasks were not significantly different (p>0.05). CONCLUSIONS: These results indicated that CNV may reflect the activities of the prefrontal cortex, in addition to the supplementary motor area, suggesting that the processing of the cue to swallow activates brain areas more widely than the volitional swallowing itself. SIGNIFICANCE: It is possible to clarify the cognitive functions associated with command swallowing by analyzing CNV.
Toshiya Nonaka; Masafumi Yoshida; Taketo Yamaguchi; Atushi Uchida; Hiroiku Ohba; Shunichi Oka; Ichiro Nakajima
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-09-16
Journal Detail:
Title:  Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology     Volume:  120     ISSN:  1872-8952     ISO Abbreviation:  Clin Neurophysiol     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-10-26     Completed Date:  2009-11-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883319     Medline TA:  Clin Neurophysiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1845-51     Citation Subset:  IM    
Department of Pediatric Dentistry, School of Dentistry, Nihon University, 1-8-13 Kanda-Surugadai, Chiyoda-ku, 101-8310 Tokyo, Japan.
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MeSH Terms
Cerebral Cortex / physiology*
Contingent Negative Variation / physiology
Deglutition / physiology*
Jaw / physiology
Mouth / physiology
Muscle, Skeletal / physiology*
Volition / physiology
Comment In:
Clin Neurophysiol. 2009 Oct;120(10):1764-5   [PMID:  19762278 ]

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