CCNBook/Networks/Distributed Representations Examples

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Figure 1: Response to parts of an object, showing a graded distributed response across different groups of neurons (each circle represents a small population of neurons that responded to each visual stimulus). Reproduced from Tanaka (2003).
Figure 2: Cluster plot of similarity of neural responses in IT for different stimulus inputs, as indicated. Both monkey and human IT exhibit a remarkably consistent pattern of response similarities. Furthermore, these patterns reflect considerable semantic influences, beyond mere visual similarity (e.g., there is a major distinction between animate vs. inanimate things, as coded by the red vs. blue colors in the plot). Reproduced from Kriegeskorte et al. (2008).
Figure 3: Object discrimination performance when the maximally-responding area is included or excluded, from the Haxby et al, 2001 study. This indicates that there is a robust distributed representation of object categories outside of the maximally responding area.