Cited by 91Visual perception and processing mechanismsMemory and Neural MechanismsNeural dynamics and brain function

Statistical Learning Signals in Macaque Inferior Temporal Cortex

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Kaposvari, Peter, Kumar, Susheel, Vogels, Rufin·2018·Cerebral Cortex

Abstract

Humans are sensitive to statistical regularities in their visual environment, but the nature of the underlying neural statistical learning signals still remains to be clarified. As in human behavioral and neuroimaging studies of statistical learning, we exposed rhesus monkeys to a continuous stream of images, presented without interstimulus interval or reward association. The stimulus set consisted of 3 groups of 5 images each (quintets). The stimulus order within each quintet was fixed, but the quintets were presented repeatedly in a random order without interruption. Thus, only transitional probabilities defined quintets of images. Postexposure recordings in inferior temporal (IT) cortex showed an enhanced response to stimuli that violated the exposed sequence. This enhancement was found only for stimuli that were not predicted by the just preceding stimulus, reflecting a temporally adjacent stimulus relationship, and was sensitive to stimulus order. By comparing IT responses with sequences with and without statistical regularities, we observed a short latency, transient response suppression for stimuli of the sequence with regularities, in addition to a later sustained response enhancement to stimuli that violated the sequence with regularities. These findings constrain models of mechanisms underlying neural responses in predictable temporal sequences, such as predictive coding.

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Crossref · 10.1093/cercor/bhw374

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  • ES effects in macaque IT neurons persist after controlling for RS.

    “These effects were sensitive to transitional statistics (e.g., the transition from Stimulus A to Stimulus B being more probable than from B to A), 90 , 91 persisted after controlling for RS, 88 , 89 and emerged at early latencies (∼150 ms). 88 , 90 , 91 , 92”
  • A series of single- and multiunit recording studies have reported evidence of ES in macaque IT neurons.

    “A series of single‐ and multiunit recording studies have also reported evidence of ES in macaque IT neurons. 85 , 88 , 89 , 90 , 91 , 92”
  • There is conflicting evidence regarding whether IT neurons are sensitive to statistical regularities present in nonadjacent stimuli from a sequence of images or whether these suppression effects are determined by the immediately preceding stimulus.

    “There is also conflicting evidence regarding whether IT neurons are sensitive to statistical regularities present in nonadjacent stimuli from a sequence of images 91 or whether these suppression effects are determined by the immediately preceding stimulus. 89 , 96”

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Authors
Kaposvari, P., Kumar, S., & Vogels, R.
Affiliations
KU Leuven (BE)
Corresponding author
Vogels, Rufin
Venue
Cerebral Cortex
Published
2016-12-01
Volume
28
Issue
1
Pages
250-266
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2560516988
Cited by
91
References
59
Citations by year
2026: 7 · 2025: 8 · 2024: 28 · 2023: 13 · 2022: 8 · 2021: 6 · 2020: 3 · 2019: 6 · 2018: 6 · 2017: 6
FWCI
3.83
Type
journal article
Language
en
Open access
Locations
  • Cerebral Cortex (publishedVersion)
  • PubMed (publishedVersion)
  • SZTE Publicatio Repozitórium (University of Szeged) (acceptedVersion, other-oa)
  • Lirias (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
statistical learning, inferior temporal cortex, rhesus monkeys, visual prediction, sequence prediction, transition probabilities, stimulus order, response suppression, response enhancement, predictive coding
MeSH terms
Animals, Association Learning, Macaca mulatta, Male, Microelectrodes, Neurons, Neuropsychological Tests, Photic Stimulation, Probability Learning, Reward, Temporal Lobe, Time Factors, Time Perception, Visual Perception

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