The capacity to rapidly suppress a behavioral act in response to sudden instruction to stop is a key cognitive function. This function, called reactive control, is tested in experimental settings using the stop signal task, which requires subjects to generate a movement in response to a go signal or suppress it when a stop signal appears. The ability to inhibit this movement fluctuates over time: sometimes, subjects can stop their response, and at other times, they can not. To determine the neural basis of this fluctuation, we recorded local field potentials (LFPs) in the alpha (6-12 Hz) and beta (13-35 Hz) bands from the dorsal premotor cortex of two nonhuman primates that were performing the task. The ability to countermand a movement after a stop signal was predicted by the activity of both bands, each purportedly representing a distinct neural process. The beta band represents the level of movement preparation; higher beta power corresponds to a lower level of movement preparation, whereas the alpha band supports a proper phasic, reactive inhibitory response: movements are inhibited when alpha band power increases immediately after a stop signal. Our findings support the function of LFP bands in generating the signatures of various neural computations that are multiplexed in the brain.

Alpha- and beta-band oscillations subserve different processes in reactive control of limb movements / Pani, Pierpaolo; DI BELLO, Fabio; Brunamonti, Emiliano; D'Andrea, Valeria; Papazachariadis, Odysseas; Ferraina, Stefano. - In: FRONTIERS IN BEHAVIORAL NEUROSCIENCE. - ISSN 1662-5153. - STAMPA. - 8:(2014), p. 383. [10.3389/fnbeh.2014.00383]

Alpha- and beta-band oscillations subserve different processes in reactive control of limb movements.

PANI, Pierpaolo;DI BELLO, FABIO;BRUNAMONTI, EMILIANO;D'ANDREA, Valeria;PAPAZACHARIADIS, ODYSSEAS;FERRAINA, Stefano
2014

Abstract

The capacity to rapidly suppress a behavioral act in response to sudden instruction to stop is a key cognitive function. This function, called reactive control, is tested in experimental settings using the stop signal task, which requires subjects to generate a movement in response to a go signal or suppress it when a stop signal appears. The ability to inhibit this movement fluctuates over time: sometimes, subjects can stop their response, and at other times, they can not. To determine the neural basis of this fluctuation, we recorded local field potentials (LFPs) in the alpha (6-12 Hz) and beta (13-35 Hz) bands from the dorsal premotor cortex of two nonhuman primates that were performing the task. The ability to countermand a movement after a stop signal was predicted by the activity of both bands, each purportedly representing a distinct neural process. The beta band represents the level of movement preparation; higher beta power corresponds to a lower level of movement preparation, whereas the alpha band supports a proper phasic, reactive inhibitory response: movements are inhibited when alpha band power increases immediately after a stop signal. Our findings support the function of LFP bands in generating the signatures of various neural computations that are multiplexed in the brain.
2014
01 Pubblicazione su rivista::01a Articolo in rivista
Alpha- and beta-band oscillations subserve different processes in reactive control of limb movements / Pani, Pierpaolo; DI BELLO, Fabio; Brunamonti, Emiliano; D'Andrea, Valeria; Papazachariadis, Odysseas; Ferraina, Stefano. - In: FRONTIERS IN BEHAVIORAL NEUROSCIENCE. - ISSN 1662-5153. - STAMPA. - 8:(2014), p. 383. [10.3389/fnbeh.2014.00383]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/678853
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