Signal transfer of visual stimuli to V4 occurs in gamma-rhythmic, pulsed information packages
- Summary Selective 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 receiver’s 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 receiver’s 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.
Author: | Dmitriy LisitsynORCiD, Iris GrotheORCiD, Andreas K. KreiterGND, Udo A. ErnstGND |
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URN: | urn:nbn:de:hebis:30:3-726874 |
DOI: | https://doi.org/10.1101/2020.02.03.931956 |
Parent Title (English): | bioRxiv |
Document Type: | Preprint |
Language: | English |
Date of Publication (online): | 2020/02/03 |
Date of first Publication: | 2020/02/03 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2023/04/23 |
Issue: | 2020.02.03.931956 |
Page Number: | 15 |
HeBIS-PPN: | 509916104 |
Institutes: | Angeschlossene und kooperierende Institutionen / MPI für Hirnforschung |
Dewey Decimal Classification: | 1 Philosophie und Psychologie / 15 Psychologie / 150 Psychologie |
6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit | |
Sammlungen: | Universitätspublikationen |
Licence (German): | ![]() |