Signal transfer of visual stimuli to V4 occurs in gamma-rhythmic, pulsed information packages
Lisitsyn, D.; Grothe, I.; Kreiter, A. K.; Ernst, U. A.
Show abstract
SummarySelective visual attention allows the brain to focus on behaviorally relevant information while ignoring irrelevant signals. As a possible mechanism, routing by synchronization was proposed: neural populations sending attended signals align their gamma-rhythmic activities with receiving populations, such that spikes from the senders arrive at excitability peaks of the receivers, enhancing signal transfer. Conversely, the non-attended signals arrive unaligned to the receivers oscillation, reducing signal transfer. Therefore, visual signals should be transferred through periodically pulsed information packages, resulting in a modulation of the stimulus content within the receivers activity by its gamma phase and amplitude. To test this prediction, we quantified gamma phase-specific stimulus content within neural activity from area V4 of macaques performing a visual attention task. For the attended stimulus we find enhanced stimulus content reaching its maximum near excitability peaks, with effect magnitude increasing with oscillation amplitude, establishing a functional link between selective processing and gamma activity.
Matching journals
The top 3 journals account for 50% of the predicted probability mass.
Similar papers in this journal
Similar papers in this journal
- Dissociation of attentional state and behavioral outcome using local field potentials 97%
- EEG signals index a global signature of arousal embedded in neuronal population recordings 96%
- Measuring stimulus-evoked neurophysiological differentiation in distinct populations of neurons in mouse visual cortex 96%
Similar papers in this journal
Similar papers in this journal
- Visual epidural field potentials possess high functional specificity in single trials. 96%
- Visually-evoked activity and variable modulation of auditory responses in the macaque inferior colliculus 95%
- Visual feature tuning of superior colliculus neural reafferent responses after fixational microsaccades 95%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.