Triggering prepared actions by sudden sounds: reassessing the evidence for a single mechanism

Marinovic, W. and Tresilian, J. R. (2016) Triggering prepared actions by sudden sounds: reassessing the evidence for a single mechanism. Acta Physiologica, 217 1: 13-32. doi:10.1111/apha.12627


Author Marinovic, W.
Tresilian, J. R.
Title Triggering prepared actions by sudden sounds: reassessing the evidence for a single mechanism
Journal name Acta Physiologica   Check publisher's open access policy
ISSN 1748-1716
Publication date 2016-05
Year available 2015
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1111/apha.12627
Open Access Status Not Open Access
Volume 217
Issue 1
Start page 13
End page 32
Total pages 20
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Collection year 2016
Language eng
Abstract Loud acoustic stimuli can unintentionally elicit volitional acts when a person is in a state of readiness to execute them (the StartReact effect). It has been assumed that the same subcortical pathways and brain regions underlie all instances of the StartReact effect. They are proposed to involve the startle reflex pathways, and the eliciting mechanism is distinct from other ways in which sound can affect the motor system. We present an integrative review which shows that there is no evidence to support these assumptions. We argue that motor command generation for learned, volitional orofacial, laryngeal and distal limb movements is cortical and the StartReact effect for such movements involves transcortical pathways. In contrast, command generation for saccades, locomotor corrections and postural adjustments is subcortical and subcortical pathways are implicated in the StartReact effect for these cases. We conclude that the StartReact effect is not a special phenomenon mediated by startle reflex pathways, but rather is a particular manifestation of the excitatory effects of intense stimulation on the central nervous system.
Keyword Acoustic stimulation
Cortex
Motor control
Motor cortex
StartReact effect
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Published online 12 December 2015

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Official 2016 Collection
School of Health and Rehabilitation Sciences Publications
School of Human Movement and Nutrition Sciences Publications
 
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