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July 29, 2026eLifeOpen Access

Sensory adaptation and pupil-linked arousal support flexible evidence accumulation during perceptual decision making

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Authors

KMKara D. McGaugheyJGJoshua I. Gold

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Overview

Randomized trial examines how sensory adaptation and arousal influence decision accuracy in monkeys, suggesting multiple mechanisms at play.

Key Points

  • The research investigates how sensory adaptation and arousal contribute to evidence accumulation in decision making.
  • Measured single-unit activity in the middle temporal (MT) area during a random-dot motion direction-discrimination task.
  • Assessed pupil-linked arousal while monkeys responded to varying temporal stability of adapting stimuli.
  • Analyzed context-dependent evidence accumulation in response to behavioral tasks.
  • Decisions were influenced by temporal-context stability, with evidence accumulation varying based on this context.
  • Stimulus-specific sensory adaptation was evident in MT but did not correlate with pupil responses.
  • Findings indicate that both sensory adaptation and arousal independently contribute to flexible evidence accumulation.

Cite This Study

McGaughey et al. (2026) studied this question.

synapsesocial.com/papers/6a69a2e2c8da07d9defa6ef6https://doi.org/10.7554/elife.110685.3
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Evidence accumulation under uncertainty - a neural marker of emerging choice and urgency2021 · 13 citations
  2. 2Time-adaptive modulation of evidence evaluation in rat posterior parietal cortex2025
  3. 3Perceptual glimpses are locally accumulated and globally maintained at distinct processing levels2025
  4. 4Perceptual glimpses are locally accumulated and globally maintained at distinct processing levels2025
  5. 5Flexibility in Choosing Decision Policies in Gathering Discrete Evidence Over Time2024