Cited by 247Visual perception and processing mechanismsNeuroscience and Neuropharmacology ResearchMotor Control and Adaptation

Neuronal Plasticity That Underlies Improvement in Perceptual Performance

Zohary, Ehud, Celebrini, Simona, Britten, Kenneth H., Newsome, William T.·1994·Science

Abstract

The electrophysiological properties of sensory neurons in the adult cortex are not immutable but can change in response to alterations of sensory input caused by manipulation of afferent pathways in the nervous system or by manipulation of the sensory environment. Such plasticity creates great potential for flexible processing of sensory information, but the actual effects of neuronal plasticity on perceptual performance are poorly understood. The link between neuronal plasticity and performance was explored here by recording the responses of directionally selective neurons in the visual cortex while rhesus monkeys practiced a familiar task involving discrimination of motion direction. Each animal experienced a short-term improvement in perceptual sensitivity during daily experiments; sensitivity increased by an average of 19 percent over a few hundred trials. The increase in perceptual sensitivity was accompanied by a short-term improvement in neuronal sensitivity that mirrored the perceptual effect both in magnitude and in time course, which suggests that improved psychophysical performance can result directly from increased neuronal sensitivity within a sensory pathway.

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Crossref · 10.1126/science.8122114

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  • This lack of long-term changes across sessions occurred despite short-term changes within sessions.

    “Interestingly, this lack of long-term changes across sessions occurred despite short-term changes within sessions, as has been reported previously (geometric mean±SEM ratio of psychometric thresholds in the second 200 versus the first 200 trials = 0.92±0.22 in monkey C and 0.84±0.29 in monkey Z; ratio of neurometric thresholds in MT in the second 200 versus the first 200 trials = 0.87±0.23 in monk”
  • The recording and analysis methods could resolve within-session changes in MT sensitivity that were smaller in magnitude than the longer-term changes expected based on behaviour.

    “our recording and analysis methods could resolve within-session changes in MT sensitivity30 that were smaller in magnitude than the longer-term changes that we would expect based on behaviour.”

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Authors
Zohary, E., Celebrini, S., Britten, K. H., & Newsome, W. T.
Affiliations
Stanford Medicine (US)
Venue
Science
Published
1994-03-04
Volume
263
Issue
5151
Pages
1289-1292
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2086373641
Cited by
247
References
28
Citations by year
2026: 1 · 2025: 1 · 2024: 5 · 2023: 2 · 2022: 5 · 2021: 3 · 2020: 2 · 2019: 6 · 2018: 6 · 2017: 7 · 2016: 5 · 2015: 4 · 2014: 6 · 2013: 4 · 2012: 14
FWCI
16.31
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
Keywords
neuroplasticity, perceptual learning, directionally selective neurons, visual cortex, motion direction discrimination, perceptual sensitivity, rhesus monkeys, sensory adaptation, neuronal sensitivity
MeSH terms
Animals, Conditioning, Psychological, Discrimination Learning, Macaca mulatta, Motion Perception, Neural Pathways, Neuronal Plasticity, Psychophysiology, Visual Cortex

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