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Rhythmic fluctuations of saccadic reaction time arising from visual competition.


ABSTRACT: Recent research indicates that attentional stimulus selection could be a rhythmic process. In monkey, neurons in V4 and IT exhibit rhythmic spiking activity in the theta range in response to a stimulus. When two stimuli are presented together, the rhythmic neuronal responses to each occur in anti-phase, a result indicative of competitive interactions. In addition, it was recently demonstrated that these alternating oscillations in monkey V4 modulate the speed of saccadic responses to a target flashed on one of the two competing stimuli. Here, we replicate a similar behavioral task in humans (7 participants, each performed 4000 trials) and report a pattern of results consistent with the monkey findings: saccadic response times fluctuate in the theta range (6?Hz), with opposite phase for targets flashed on distinct competing stimuli.

SUBMITTER: Chota S 

PROVIDER: S-EPMC6203856 | biostudies-other | 2018 Oct

REPOSITORIES: biostudies-other

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Rhythmic fluctuations of saccadic reaction time arising from visual competition.

Chota Samson S   Luo Canhuang C   Crouzet Sébastien M SM   Boyer Léa L   Kienitz Ricardo R   Schmid Michael Christoph MC   VanRullen Rufin R  

Scientific reports 20181026 1


Recent research indicates that attentional stimulus selection could be a rhythmic process. In monkey, neurons in V4 and IT exhibit rhythmic spiking activity in the theta range in response to a stimulus. When two stimuli are presented together, the rhythmic neuronal responses to each occur in anti-phase, a result indicative of competitive interactions. In addition, it was recently demonstrated that these alternating oscillations in monkey V4 modulate the speed of saccadic responses to a target fl  ...[more]

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