10.5061/DRYAD.MD2N292
Subramaniyan, Manivannan
University of Pennsylvania
Ecker, Alexander S.
University of Tübingen
Patel, Saumil S.
Baylor College of Medicine
Cotton, R. James
Baylor College of Medicine
Bethge, Matthias
Max Planck Institute for Biological Cybernetics
University of Tübingen
Pitkow, Xaq
Rice University
Berens, Philipp
University of Tübingen
Tolias, Andreas S.
Rice University
Data from: Faster processing of moving compared to flashed bars in awake
macaque V1 provides a neural correlate of the flash lag illusion
Dryad
dataset
2019
monkey
Motion
latency
V1
Flash lag illusion
2019-08-23T00:00:00Z
2019-08-23T00:00:00Z
en
https://doi.org/10.1152/jn.00792.2017
1019279075 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
When the brain has determined the position of a moving object, due to
anatomical and processing delays, the object will have already moved to a
new location. Given the statistical regularities present in natural
motion, the brain may have acquired compensatory mechanisms to minimize
the mismatch between the perceived and the real position of moving
objects. A well-known visual illusion — the flash lag effect — points
towards such a possibility. Although many psychophysical models have been
suggested to explain this illusion, their predictions have not been tested
at the neural level, particularly in a species of animal known to perceive
the illusion. Towards this, we recorded neural responses to flashed and
moving bars from primary visual cortex (V1) of awake, fixating macaque
monkeys. We found that the response latency to moving bars of varying
speed, motion direction and luminance was shorter than that to flashes, in
a manner that is consistent with psychophysical results. At the level of
V1, our results support the differential latency model positing that
flashed and moving bars have different latencies. As we found a neural
correlate of the illusion in passively fixating monkeys, our results also
suggest that judging the instantaneous position of the moving bar at the
time of flash — as required by the postdiction/motion-biasing model — may
not be necessary for observing a neural correlate of the illusion. Our
results also suggest that the brain may have evolved mechanisms to process
moving stimuli faster and closer to real time compared with briefly
appearing stationary stimuli.
all_data_zippedThis zipped folder contains subfolders raw_data and
processed_data. Inside raw_data, there are separate folders for each
monkey. Check the README file for full details.data.zip