Neural Basis of Cognitive Control over Movement Inhibition: Human fMRI

Kitty Zhe Xu

ISBN 10: 6202306017 / ISBN 13: 9786202306010

Published by Scholars' Press Jan 2018, 2018

About this Item

Neuware -A critical function of executive control is the ability to flexibly inhibit or change a plan of action when it is contextually inappropriate. Using human fMRI and a context-dependent stop signal task (SST), we found a functional double dissociation between the right ventrolateral prefrontal cortex (rVLPFC) and the bi-lateral frontal eye field (FEF). rVLPFC activation was associated with detecting and encoding the meaning of stop signals and the response inhibition, while FEF activity reflected motor output regardless of the stimulus response mapping or the context. Furthermore, a representation of stop signal meaning and response inhibition were represented in separate regions of rVLPFC. These results were further validated by electrophysiological recordings in rVLPFC and FEF from one monkey. The findings suggest that inhibition of a planned behavior is not governed by a single brain system as had been previously proposed, but instead depends on two neurally distinct processes.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 56 pp. Englisch.

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Bibliographic Details

• Title: Neural Basis of Cognitive Control over Movement Inhibition: Human fMRI
• Publisher: Scholars' Press Jan 2018
• Publication Date: 2018
• Language: English
• ISBN 10: 6202306017
• ISBN 13: 9786202306010
• Binding: Taschenbuch
• Condition: Neu
• Dimensions: 220W x 150H x 4D millimeters 220 millimeters width by 150 millimeters height by 4 millimeters depth
• Weight: 102 grams

About this title

Synopsis

A critical function of executive control is the ability to flexibly inhibit or change a plan of action when it is contextually inappropriate. Using human fMRI and a context-dependent stop signal task (SST), we found a functional double dissociation between the right ventrolateral prefrontal cortex (rVLPFC) and the bi-lateral frontal eye field (FEF). rVLPFC activation was associated with detecting and encoding the meaning of stop signals and the response inhibition, while FEF activity reflected motor output regardless of the stimulus response mapping or the context. Furthermore, a representation of stop signal meaning and response inhibition were represented in separate regions of rVLPFC. These results were further validated by electrophysiological recordings in rVLPFC and FEF from one monkey. The findings suggest that inhibition of a planned behavior is not governed by a single brain system as had been previously proposed, but instead depends on two neurally distinct processes.

About the Author

I received my PhD in from the Department of Psychological and Brain Sciences at the Johns Hopkins University. My research focused on studying how our brains make decisions, and allow us to inhibit and/or initiate an action in different situations and contexts. I currently work as a quantitative user experience researcher at Pinterest. Inc