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• W2900540907 abstract "Motor decisions entails a buildup of choice-selective activity in the motor cortex. The rate of this buildup crucially depends on the amount of evidence favoring the selection of each action choice in the visual environment. Though numerous studies have characterized how sensory evidence drives motor activity when processed consciously, very little is known about the neural mechanisms that underlie the integration of implicit sources of information. Here, we used electroencephalography to investigate the impact of implicit visual cues on response-locked potentials and oscillatory activity in the motor cortex during decision-making. Subjects were required to select between left and right index finger responses according to the motion direction of a cloud of dots presented in one of three possible colors. Unbeknown to the participants, the color cue could bring evidence either in favor of or against the selection of the correct response. Implicit color cues tuned choice-selective oscillatory activity in the low beta range (16-25 Hz), boosting the buildup of contralateral activity when evidence favored the selection of the correct action, while weakening it when evidence biased against the correct response. This modulation of oscillatory activity influenced the speed at which the correct action was eventually chosen. Implicit cues also altered oscillatory activity in a non-selective way in the low frequency oscillation (1-7 Hz) and high beta ranges (25-35 Hz), impacting both contralateral and ipsilateral activity. The current findings yield a critical extension of prior observations by indicating that the integration of both explicit and implicit sources of evidence tunes oscillatory motor activity during decision-making." @default.
• W2900540907 created "2018-11-29" @default.
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• W2900540907 date "2019-02-01" @default.
• W2900540907 modified "2023-10-18" @default.
• W2900540907 title "Implicit visual cues tune oscillatory motor activity during decision-making" @default.
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• W2900540907 doi "https://doi.org/10.1016/j.neuroimage.2018.11.027" @default.
• W2900540907 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30458303" @default.
• W2900540907 hasPublicationYear "2019" @default.
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