Fig. 3. Average responses to single stimuli during different behavioral states. In each graph, responses were normalized to responses during the quiet state. a, Average responses of single units. b, Average responses of single-unit and multiunit recordings combined. Topgraphs in a and b represent the maximum magnitude (max mag) of the responses. Bottom graphs ina and b represent the integrated response (intg) values (see Materials and Methods for a description of these measures). Asterisks indicate values significantly different from the quiet state in each graph. Error bars represent ± SEM. ANOVA results: a, VPM max mag,F = 1.99, p = 0.187; VPM intg,F = 8.77, p = 0.0012; SI max mag, F = 5.74, p = 0.0022; SI intg, F = 10.99, p = 0.000023.b, VPM max mag, F = 9.82,p = 0.0099; VPM intg, F = 10.22, p = 0.0090; SI max mag,F = 9.82, p = 0.0099; SI intg,F = 23.94, p = 0.00097. Please see text for p values from post hoc tests (Tukey’s HSD). A, Active;Q, quiet; W, whisking; WT,whisker twitching.