RT Journal Article
T1 Neural correlates of unpredictable Stop and non-Stop cues in overt and imagined execution
A1 González Villar, Alberto Jacobo
A1 Galdo Álvarez, Santiago
A1 Carrillo de la Peña, María Teresa
AB The ability to inhibit incorrect behaviors is crucial for survival. In real contexts, cues that require stopping usually appear intermixed with indications to continue the ongoing action. However, in the classical Stop-signal task (SST), the unpredictable stimuli are always signals that require inhibition. To understand the neural mechanisms activated by low-probability nonstop cues, we recorded the electroencephalography from 23 young volunteers while they performed a modified SST where the unpredictable stimuli could be either Stop or confirmatory Go signals (CGo). To isolate the influence of motor output, the SST was performed during overt and covert execution. We found that, paradoxically, CGo stimuli activated motor inhibition processes, and evoked patterns of brain activity similar to those obtained after Stop signals (N2/P3 event-related potentials and midfrontal theta power increase), though in lesser magnitude. These patterns were also observed during the imagined performance. Finally, applying machine learning procedures, we found that the brain activity evoked after CGo versus Stop signals can be classified above chance during both, overt and imagined execution. Our results provide evidence that unpredictable signals cause motor inhibition even when they require to continue an ongoing action
PB Wiley
SN 0048-5772
YR 2022
FD 2022
LK http://hdl.handle.net/10347/29226
UL http://hdl.handle.net/10347/29226
LA eng
NO González‐Villar, A., Galdo‐Álvarez, S., & Carrillo‐de‐la‐Peña, M. T. (2022). Neural correlates of unpredictable stop and non‐Stop cues in overt and imagined execution. Psychophysiology, 59(7). doi:10.1111/psyp.14019
NO This work was supported by funding from the Galician Government (Consellería de Cultura, Educación e Ordenación Universitaria; Axudas para a consolidación e Estruturación de unidades de investigación competitivas do Sistema universitario de Galicia; grant number Ref:: ED431C 2021/04.); and from Fundação para a Ciência e a Tecnologia––Scientific Employment Stimulus (CEECIND/02639/2017 to A.G.V.)
DS Minerva
RD 23 abr 2026