Response time reliably decreased at all coherence levels while accuracy improved reliably only at intermediate coherence levels¶

Claim · All claims
Evidence · 1 study · associational r1 · q3
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? By-participant aggregated comparisons showed reliable RT decreases for all seven coherence levels, whereas accuracy increases were statistically reliable only for intermediate coherence levels. → Cochrane 2023

Evidence¶

Cochrane 2023¶

Cochrane, A., Sims, C. R., Bejjanki, V. R., Green, C. S., & Bavelier, D. (2023). Multiple timescales of learning indicated by changes in evidence-accumulation processes during perceptual decision-making. npj Science of Learning 8:19. https://doi.org/10.1038/s41539-023-00168-9

q3 · i? · associational · r1

Preliminary behavioral check on the four-day dot-motion data (21 participants, coherence levels 0.8% to 51.2%): RT reliably decreased at all coherence levels; accuracy increased numerically everywhere but reached statistical reliability only at intermediate coherences. No effect sizes are printed.

"by- participant aggregated comparisons indicated that RT reliably decreased for all coherence levels. Accuracy meanwhile increased numerically for all coherence levels, however, this was only statistically reliable for intermediate coherence levels"

Discussion¶

Related Claims¶

• Accuracy-only logistic psychometric fits support a two-timescale model but cannot identify which decision component changed — related
• Detection of motion discrepancies increases with both perturbation magnitude and duration, with response times decreasing with magnitude — related
• VGPs respond faster than NVGPs with equivalent accuracy, and the RT advantage is larger at low motion coherence — related