Figure 6.

Comparison of temporal response properties between auditory cortex and subcortical regions. A: Comparison between A1 and MGB. Stimulus-synchronized firings are quantified by the vector strength (VS) (A1: thin gray dashed curve. MGB: thick gray solid curve, including both synchronized and mixed neurons). Non-synchronized firings are quantified by the normalized firing rate (A1: thin black dashed curve. MGB: thick black solid curve). Error bars represent standard error of the mean (SEM). MGB data are from Bartlett and Wang (2007). A1 data are from Lu et al. (2001b). B: MGB transitions the transformation from a synchronized representation in IC to synchronized and non-synchronized representations in auditory cortex. The proportion of units in each auditory region (IC: open bars, MGB: grey bars, A1: black bars) is plotted for each temporal response type (synchronized, mixed and on-synchronized). IC data are from Batra et al. (1989). ). MGB data are from Bartlett and Wang (2007). A1 data are from Lu et al. (2001b). The total number of units from each region is shown in parentheses. Adapted from Bartlett and Wang (2007).