Figure 15.

Comparison of selectivity among cells with larger responses in the Easy or Grouping condition (E/G; n = 22), those with no significant difference between two combined conditions (n; n = 167) and those with larger responses in the Difficult condition (D; n = 23). Cells were classified based on the raw firing rate in the response window without a subtraction of spontaneous firing rate. a, The half-width. b, The sparseness. c, The ratio of intragroup variance to the total variance of mean responses to individual stimuli. d, The tuning curves against stimulus rank. Error bars represent the SEM.