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The point of no return in vetoing self-initiated movements.


ABSTRACT: In humans, spontaneous movements are often preceded by early brain signals. One such signal is the readiness potential (RP) that gradually arises within the last second preceding a movement. An important question is whether people are able to cancel movements after the elicitation of such RPs, and if so until which point in time. Here, subjects played a game where they tried to press a button to earn points in a challenge with a brain-computer interface (BCI) that had been trained to detect their RPs in real time and to emit stop signals. Our data suggest that subjects can still veto a movement even after the onset of the RP. Cancellation of movements was possible if stop signals occurred earlier than 200 ms before movement onset, thus constituting a point of no return.

SUBMITTER: Schultze-Kraft M 

PROVIDER: S-EPMC4743787 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

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The point of no return in vetoing self-initiated movements.

Schultze-Kraft Matthias M   Birman Daniel D   Rusconi Marco M   Allefeld Carsten C   Görgen Kai K   Dähne Sven S   Blankertz Benjamin B   Haynes John-Dylan JD  

Proceedings of the National Academy of Sciences of the United States of America 20151214 4


In humans, spontaneous movements are often preceded by early brain signals. One such signal is the readiness potential (RP) that gradually arises within the last second preceding a movement. An important question is whether people are able to cancel movements after the elicitation of such RPs, and if so until which point in time. Here, subjects played a game where they tried to press a button to earn points in a challenge with a brain-computer interface (BCI) that had been trained to detect thei  ...[more]

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