Mastication accelerates Go/No-go decisional processing: An event-related potential study.
OBJECTIVE
The purpose of the present study was to investigate the effect of mastication on Go/No-go decisional processing using event-related potentials (ERPs).


METHODS
Thirteen normal subjects underwent seven sessions of a somatosensory Go/No-go paradigm for approximately 4min; Pre, and Post 1, 2, 3, 4, 5, and 6. The Control condition included the same seven sessions. The RT and standard deviation were recorded, and the peak amplitude and latency of the N140 and P300 components were analyzed.


RESULTS
The RT was significantly shorter in Mastication than in Control at Post 1-3 and 4-6. The peak latency of N140 was earlier in Mastication than in Control at Post 4-6. The latency of N140 was shortened by repeated sessions in Mastication, but not by those in Control. The peak latency of P300 was significantly shorter in Mastication than in Control at Post 4-6. The peak latency of P300 was significantly longer in Control with repeated sessions, but not in Mastication.


CONCLUSIONS
These results suggest that mastication may influence response execution processing in Go trials, as well as response inhibition processing in No-go trials.


CONCLUSIONS
Mastication accelerated Go/No-go decisional processing in the human brain.
Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan. Electronic address: kiwakos@nips.ac.jp.
Kiwako
K
Sakamoto
Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan; Department of Health Sciences, Faculty of Human Life and Environment, Nara Women's University, Nara City, Japan.
Hiroki
H
Nakata
Department of Clinical Laboratory, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Masato
M
Yumoto
Department of Cerebral Research, National Institute for Physiological Sciences, Japan.
Norihiro
N
Sadato
Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan.
Ryusuke
R
Kakigi
D000328:Adult; D001519:Behavior / Q000502:physiology; D001921:Brain / Q000502:physiology*; D016022:Case-Control Studies; D003657:Decision Making / Q000502:physiology*; D004569:Electroencephalography; D018913:Event-Related Potentials, P300 / Q000502:physiology; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008409:Mastication / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology
ERP; Go/No-go; Gum; Mastication; N140; P300