Trial-by-trial modulation of express visuomotor responses induced by symbolic or barely detectable cues
Samuele Contemori, Gerald E. Loeb, Brian D. Corneil, Guy Wallis, Timothy J. Carroll
Abstract
Express visuomotor responses in humans appear to reflect subcortical sensorimotor transformation of visual inputs, potentially conveyed via the tecto-reticulo-spinal pathway. Here we show that the express responses are influenced by both symbolic and barely detectable spatial cues about stimulus location. The symbolic cue-induced effects suggest cortical top-down modulation of the putative subcortical visuomotor network. The effects of barely detectable cues may reflect exogenous facilitation mechanisms of the tecto-reticulo-spinal pathway.
Topics & Concepts
Superior colliculusPsychologyStimulus (psychology)NeuroscienceSuperior ColliculiSensory cueCognitionContrast (vision)Visual cortexCommunicationCognitive psychologyVisual systemComputer scienceArtificial intelligenceMotor Control and AdaptationEEG and Brain-Computer InterfacesVisual perception and processing mechanisms