Corrective response times in a coordinated eye-head-arm countermanding task

Journal of Neurophysiology
Gordon TaoGunnar Blohm

Abstract

Inhibition of motor responses has been described as a race between two competing decision processes of motor initiation and inhibition, which manifest as the reaction time (RT) and the stop signal reaction time (SSRT); in the case where motor initiation wins out over inhibition, an erroneous movement occurs that usually needs to be corrected, leading to corrective response times (CRTs). Here we used a combined eye-head-arm movement countermanding task to investigate the mechanisms governing multiple effector coordination and the timing of corrective responses. We found a high degree of correlation between effector response times for RT, SSRT, and CRT, suggesting that decision processes are strongly dependent across effectors. To gain further insight into the mechanisms underlying CRTs, we tested multiple models to describe the distribution of RTs, SSRTs, and CRTs. The best-ranked model (according to 3 information criteria) extends the LATER race model governing RTs and SSRTs, whereby a second motor initiation process triggers the corrective response (CRT) only after the inhibition process completes in an expedited fashion. Our model suggests that the neural processing underpinning a failed decision has a residual effect on subs...Continue Reading

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Citations

May 24, 2018·American Journal of Men's Health·Magdalena CymaRafał Stemplewski
Sep 8, 2018·Journal of Vision·Anton MalienkoAarlenne Z Khan
Sep 12, 2020·International Journal of Environmental Research and Public Health·Magdalena Cyma-WejchenigRafał Stemplewski
Sep 19, 2019·Journal of Neurophysiology·Harbandhan Kaur AroraJohn Douglas Crawford

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Software Mentioned

CompressGo2
MATLAB
GoFinGo2
StopFinGo2
LATER
StopStartGo2

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