Double dissociation of spontaneous alpha-band activity and pupil-linked arousal on additive and multiplicative perceptual gain

Assistant Professor Jason Samaha worked in collaboration with Ph.D. student April Pilipenko to publish this 2024 article in the Journal of Neuroscience, finding that synchronous brain waves in the alpha-band inhibit visual perception, regardless of the strength or presence of a stimulus, leading to false percepts. Simultaneously, changes in one’s pupil size boost perception for strong, but not weak stimuli, suggesting that high arousal causes more accurate vision. 

Last modified: Jul 26, 2024