selection
presaccadic perception
how visual sensitivity and neural representations change at the future point of fixation before saccades.
visual neuroscience · são paulo, brazil
perception and action during active vision
we investigate the behavioural effects and neural mechanisms of eye movements on perception and action
- approach
- behaviour + psychophysics + neurophysiology
- models
- humans + non-human primates
- affiliation
- university of são paulo + federal university of rio de janeiro + ernst strüngmann institute
research programme
vision is an active process.
our work asks how the visual system selects, predicts and stabilises information around each eye movement.
active sampling
foraging and visual search
investigating perception and decision making in naturalistic tasks.
dynamics
neural mechanisms of active vision
how neuronal populations across the visual and oculomotor systems coordinate perception and action.
methods
from behaviour to neural populations.
psychophysics
quantifying perception under controlled visual and temporal conditions.
eye tracking
resolving the preparation, execution and consequences of saccadic eye movements.
eeg & meg
tracking fast neural dynamics across the human brain.
electrophysiology
recording neuronal populations in non-human primates during active visual behaviour.
featured paper
dissociable effects of feature expectation on saccades and presaccadic perception
our recent work asks whether expectations influence perceptual sensitivity and eye-movement initiation through the same mechanisms.
view all publicationsrecent work
latest papers and preprints.
2026
preprint
dissociable effects of feature expectation on saccades and presaccadic perception
l. z. bortoluzzi & g. rohenkohl · biorxiv
view publication2025
research article
presaccadic modulation of lateral interactions
g. mueller de melo, i.o. pitorri & g. rohenkohl · journal of vision 25, 7
view publication2025
research article
presaccadic attentional shifts are not modulated by saccade amplitude
l. z. bortoluzzi, e. carlos-lima, g. mueller de melo, m. h. s. zhu & g. rohenkohl · scientific reports 15, 27780
view publicationjoin the laboratory
interested in how the brain sees and acts?
we welcome enquiries from prospective undergraduate researchers, graduate students, postdoctoral fellows and collaborators whose interests connect with active vision.
current opportunities