Face Repetition Probability Does Not Affect Repetition Suppression in Macaque Inferotemporal Cortex

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
Kasper VinkenRufin Vogels

Abstract

Repetition suppression, which refers to reduced neural activity for repeated stimuli, is typically explained by bottom-up or local adaptation mechanisms. However, recent theories have emphasized the role of top-down processes, suggesting that this response reduction reflects the fulfillment of perceptual expectations. To support this, an influential human fMRI study showed that the magnitude of suppression is modulated by the probability of a repetition. No such repetition probability effect was found in macaque inferior temporal (IT) cortex for spiking activity despite the presence of repetition suppression. Contrary to the human fMRI studies that showed an effect of repetition probability, the macaque single-unit study used a large variety of unfamiliar stimuli and the monkeys were not required to attend the stimuli. Here, as in the human fMRI studies, we used faces as stimuli and made the monkeys attend to the stimulus content. We simultaneously recorded spiking activity and local field potentials (LFPs) in the middle lateral face patch (ML) of one monkey (male) and a face-responsive region of another (female). Although we observed significant repetition suppression of spiking activity and high gamma-band LFPs in both animal...Continue Reading

Citations

Mar 10, 2020·Annals of the New York Academy of Sciences·Kevin S WalshRedmond G O'Connell
Jan 11, 2020·Frontiers in Neuroscience·Catarina AmadoGyula Kovács
Mar 12, 2020·Nature Reviews. Neuroscience·Christoph Teufel, Paul C Fletcher
Jul 2, 2019·Frontiers in Psychology·Sophie-Marie RostalskiGyula Kovács
Nov 12, 2020·Journal of Neurophysiology·Francesco Fabbrini, Rufin Vogels
Aug 29, 2020·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Sophie-Marie RostalskiDaniel Feuerriegel
Apr 10, 2021·Neuroscience and Biobehavioral Reviews·Daniel FeuerriegelGyula Kovács
Apr 28, 2021·Proceedings of the National Academy of Sciences of the United States of America·Vahid MehrpourNicole C Rust
Jun 12, 2021·Communications Biology·Daphne StamJan Van den Stock
Jul 16, 2021·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Evgenia BednayaDavide Bottari
Jul 17, 2021·Annual Review of Vision Science·Nicole C Rust, Stephanie E Palmer

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