Meliora Hall

Highlights • Pre-microsaccadic attention effects are highly localized at the microsaccade goal • Pre-microsaccadic enhancements are reduced when microsaccades are less accurate • Before microsaccade onset, sensitivity decreases at the preferred locus of fixation Summary Microsaccades, the tiny gaze relocations that occurr during fixation, have been linked to covert attention deployed degrees away from the center of gaze.

Highlights • Visual stimulation elicits theta and gamma oscillations in V1 and V4 • Theta and gamma oscillations interact in time • Although lesion of V1 eliminates V4 theta oscillations, gamma oscillations survive • Gamma oscillations still contain stimulus information but emerge delayed without V1 Summary Theta (3–9 Hz) and gamma (30–100 Hz) oscillations have been observed at different levels along the hierarchy of cortical areas and across a wide set of cognitive tasks.

Highlights • By formatting the input flow, saccades play an important computational role in vision • At low spatial frequencies, saccades discard redundant information in natural scenes • The bandwidth of this effect (whitening) increases as saccade amplitude decreases • The whitening bandwidth oscillates during the natural saccade/fixation cycle Summary Humans use rapid gaze shifts, known as saccades, to explore visual scenes.