T19_Decision Making

Solid lines are best tting functions based on a model

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Unformatted text preview: . Solid lines are best-fitting functions based on a model for the decision using signal detection theory. The best fits suggest that the internal signals are proportional to motion strength and viewing 600 time. N = 45,511 trials from 32 experiments in two monkeys. (Reprinted with permission from J. I. Gold and M. N. Shadlen, The influence of behavioral context on the representation of a perceptual decision in developing oculomotor commands. J. Neurosci. 500 23:632–651. © 2003 by the Society for Neuroscience.) 1 B Variable viewing duration: behavior 1 % coh “Coherence” 51.2 (aka “dot correlation”) 25.6 0.9 12.8 Probabiliy correct 0.9 6.4 0.8 0.7 3.2 Probability correct A 1 0.8 0.7 0.6 0.6 0.5 0.5 0 At lower coh, 200 400 600 Viewing time (msec) Response time (msec) 900 1 B 800 F 88.2 Performance on the variable-duration version of the Perfect performance after 200 msecviewing discrimination task depends on motion coherence and at highest coh 700 time. Solid lines are best-fitting functions based on a model for the decision using signal detection theory. The best fits suggest that the internal signals are proportional to motion strength and longer performance increased with time (overviewing than 200 600 time. N = 45,511 trials from 32 experiments in two monkeys. (Reprinted with permission from J. I. Gold and M. N. Shadlen, The influence of behavioral context on the representation of a perceptual decision in developing oculomotor commands. J. Neurosci. 500 23:632–651. © 2003 by the Society for Neuroscience.) msec) Variable viewing duration: behavior 1 % coh “Coherence” 51.2 (aka “dot correlation”) 25.6 0.9 12.8 Probabiliy correct 0.9 6.4 0.8 0.7 3.2 Probability correct A 1 0.8 0.7 0.6 0.6 0.5 0.5 0 At lower coh, 200 400 600 Viewing time (msec) Response time (msec) 900 1 B 800 F 88.2 Performance on the variable-duration version of the Perfect performance after 200 msecviewing discrimination task depends on motion coherence and at highest coh 700...
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