Fig. 2: Applying Rastermap to neural activity from a virtual reality task.

a, In total, 66,318 neurons were recorded across mouse visual cortex using two-photon calcium imaging, colored by position in the Rastermap sorting. b, During the recording, mice navigated through a one-dimensional virtual reality (VR) with two different corridors (‘leaves’ and ‘circles’) that were separated by a gray area and randomly interleaved. A tone was played in each corridor at a random time, and, in the ‘leaves’ corridor, the tone was followed by a reward. c, The sorted asymmetric similarity matrix from the recording. d, Top: neural activity sorted by Rastermap; colored backgrounds denote the type of corridor; green lines denote rewards. Bottom: event times in the task and running speed. e, Superneuron tuning curves to positions along each corridor. M, medial; A, anterior; P, posterior; L, lateral.