Strategy-dependent effects of working-memory limitations on human perceptual decision-making Journal Article uri icon



  • AbstractDeliberative decisions based on an accumulation of evidence over time depend on working memory, and working memory has limitations, but how these limitations affect deliberative decision-making is not understood. We used human psychophysics to assess the impact of working-memory limitations on the fidelity of a continuous decision variable. Participants decided the average location of multiple visual targets. This computed, continuous decision variable degraded with time and capacity in a manner that depended critically on the strategy used to form the decision variable. This dependence reflected whether the decision variable was computed either: 1) immediately upon observing the evidence, and thus stored as a single value in memory; or 2) at the time of the report, and thus stored as multiple values in memory. These results provide important constraints on how the brain computes and maintains temporally dynamic decision variables.

publication date

  • September 6, 2021

has restriction

  • green

Date in CU Experts

  • September 14, 2021 2:05 AM

Full Author List

  • Schapiro K; Josić K; Kilpatrick ZP; Gold JI

author count

  • 4

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