Stopping Speech Suppresses the Task-Irrelevant Hand

Autor/inn/en	Cai, Weidong; Oldenkamp, Caitlin L.; Aron, Adam R.
Titel	Stopping Speech Suppresses the Task-Irrelevant Hand
Quelle	In: Brain and Language, 120 (2012) 3, S.412-415 (4 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0093-934X
DOI	10.1016/j.bandl.2011.11.006
Schlagwörter	Motor Reactions; Brain Hemisphere Functions; Responses; Cognitive Processes; Cognitive Measurement; Stimuli; Speech; Task Analysis; Inhibition; Diagnostic Tests; Human Body + Suchen Sie Ihr Suchwort? Cognitive process; Kognitiver Prozess; Anreizsystem; Speaking; Sprechen; Aufgabenanalyse; Hemmung; Diagnostic test; Diagnostischer Test; Menschlicher Körper
Abstract	Some situations require one to quickly stop an initiated response. Recent evidence suggests that rapid stopping engages a mechanism that has diffuse effects on the motor system. For example, stopping the hand dampens the excitability of the task-irrelevant leg. However, it is unclear whether this "global suppression" could apply across wider motor modalities. Here we tested whether stopping speech leads to suppression of the task-irrelevant hand. We used Transcranial Magnetic Stimulation over the primary motor cortex with concurrent electromyography from the hand. We found that when speech was successfully stopped the motor evoked potential from the task-irrelevant hand was significantly reduced compared to when the participant failed to stop speaking, or responded on non stop signal trials, or compared to baseline. This shows that when speech is quickly stopped, there is a broad suppression across the motor system. This has implications for the neural basis of speech control and stuttering. (Contains 1 table and 1 figure.) (As Provided).
Anmerkungen	Elsevier. 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126; Tel: 407-345-4020; Fax: 407-363-1354; e-mail: usjcs@elsevier.com; Web site: http://www.elsevier.com
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10