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The two insets illustrate the correspondence between

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Unformatted text preview: ate the accumulated difference 100 years to the weight of evidence (see text for details) simply scales the ordinate. The two insets illustrate the correspondence between the weight to make ofwhere kthe underlying rule:antineuron this ifatk does 1 viewed as hypothetical (normal, equivariate) probability(8) stimulus is a constant. Note that two time points, equal the not Decision in bans, responsesrearranges| to: by the neuron and antineuron up to that , pi evidencepressed neuron and and 2 hesis x i value of that density functions.that h proportionality in Equation 6, thenBgenerated constantThese is true. If the weightthe distributions of thethe 1number Be process| isvalueand a decision is rendered for h . of functions describe of evidence reaches total at of, spikes the stopped sensory time point, given barrier the llthat “two This is the is computed h is true. If the weight of evidence reaches to (not shown), a decision for h is issued in error. value of that expected outcome when is merely proportional B the weight 1 rtex. We of evidence. Regardless of the value of k, however, the (Recall) Equation 4, 1is the logistic function (here using between . (4) Pr(h |m) t, that is neither which,speed. Higher barriers meant that of1968; 1 and10 B1975; Luce, 1986; Ratcliff and like le (x tween accuracy and Link ence algorithm for updating the weight evidenceHeath,the is ght, when more evidence was e ). Unlike in turn, implied Rouder, 1998; Stone, 1960; Usher and McClelland, 2001; base accumulated, which, in Equation 4, however, the probability 0 0 1 2 1 1 0 0 1 1 1 1 1 0 time measured pothesis after all the by the neuron and antineuron up to that tions of the total number of spikes generated evidence has been sampled, and hm (Good, barrier at 0B, andprocess are called the decision is rendered for h1. e reaches theReview Pr(h ) the Pr(h1) is stopped and a prior probabilities and were used 303 reaches B (not shown), a decision for h0hypothesiserror. Banburismus Performed by befor...
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This note was uploaded on 09/15/2011 for the course COGS 1 taught by Professor Lewis during the Spring '08 term at UCSD.

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