Speed and Accuracy of Visual Motion Discrimination by Rats

摘要: Animals must continuously evaluate sensory information to select the preferable among possible actions in a given context, including option wait for more before committing another course of action. In experimental decision tasks that replicate these features, reaction time distributions can be informative about implicit rules by which animals determine when commit and what do. We measured times Long-Evans rats discriminating direction motion coherent random dot stimulus, using self-paced two-alternative forced-choice (2-AFC) task. Our main findings are: (1) When strength was constant across trials, error trials had shorter than correct trials; other words, accuracy increased with response latency. (2) varied randomly interleaved strength, whereas decreased. (3) Accuracy each considered separately, experiment overall. (4) stimulus duration limited, improved duration, (5) decreased latency after offset. This case conclude integrate visual evidence over time, but this task their is governed elapsed criterion sufficient evidence.