Dependence of the stimulus-driven microsaccade rate signature in rhesus macaque monkeys on visual stimulus size and polarity
Tatiana Malevich, Antimo Buonocore, Ziad M. Hafed
Abstract
Microsaccade rate is transiently reduced after sudden stimulus onsets, and then strongly rebounds before returning to baseline. We explored the influence of stimulus polarity (black vs. white) and size on this "rate signature." Large stimuli caused more muted microsaccadic rebound than small ones, and microsaccadic rebound was also differentially affected by black versus white stimuli, particularly with small stimuli. These results suggest dissociated neural mechanisms for microsaccadic inhibition and rebound in the microsaccadic rate signature.
Topics & Concepts
Stimulus (psychology)MicrosaccadeLuminancePsychologyEye movementNeuroscienceCommunicationAudiologySaccadic maskingArtificial intelligenceCognitive psychologyMedicineComputer scienceVisual perception and processing mechanismsOlfactory and Sensory Function StudiesGlaucoma and retinal disorders