2026-06-30T03:57:08Zhttps://repisalud.isciii.es/rest/oai/requestoai:repisalud.isciii.es:20.500.12105/95242025-05-21T13:16:02Zcom_20.500.12105_2052com_20.500.12105_2051com_20.500.12105_15322col_20.500.12105_19614col_20.500.12105_16961
Repisalud
author
Castellote, Juan Manuel
author
Van den Berg, M E L
author
Valls-Solé, J
funder
Fundación La Marató TV3
funder
Instituto de Salud Carlos III
2020-04-13T11:18:15Z
2020-04-13T11:18:15Z
2013
Biomed Res Int. 2013;2013:471792.
10.1155/2013/471792
2314-6141
2314-6133
BioMed research international
24106706
http://hdl.handle.net/20.500.12105/9524
Preparation of the motor system for movement execution involves an increase in excitability of motor pathways. In a reaction time task paradigm, a startling auditory stimulus (SAS) delivered together with the imperative signal (IS) shortens reaction time significantly. In self-generated tasks we considered that an appropriately timed SAS would have similar effects. Eight subjects performed a ballistic wrist extension in two blocks: reaction, in which they responded to a visual IS, and action, in which they moved when they wished within a predetermined time window. In 20-25% of the trials, a SAS was applied. We recorded electromyographic activity of wrist extension and wrist movement kinematic variables. No effects of SAS were observed in action trials when movement was performed before or long after SAS application. However, a cluster of action trials was observed within 200 ms after SAS. These trials showed larger EMG bursts, shorter movement time, shorter time to peak velocity, and higher peak velocity than other action trials (P < 0.001 for all), with no difference from Reaction trials containing SAS. The results show that SAS influences the execution of self-generated human actions as it does with preprogrammed reaction time tasks during the assumed building up of preparatory activity before execution of the willed motor action.
eng
The StartReact effect on self-initiated movements
research article
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URL
https://repisalud.isciii.es/bitstreams/f9e5177a-e70a-4857-b4c4-4221233f3909/download
File
MD5
7137606924fb526aef6239fef9d98c16
1849339
application/pdf
TheStartReactEffect_2013.pdf
URL
https://repisalud.isciii.es/bitstreams/41278ebd-4f33-4e05-af4a-a2ed63bee258/download
File
MD5
86e353228a173024f7aba43550983907
50787
text/plain
TheStartReactEffect_2013.pdf.txt