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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Trends Cogn Sci. 2019 Apr 25;23(6):510–524. doi: 10.1016/j.tics.2019.03.006

Figure 2: Sparse and selective coding of declarative memory content and reinstatement by single neurons.

Figure 2:

(A-C) Example of visually selective neurons. (A) Two visually selective neurons, one responding to many different images showing clothes (top, from hippocampus) and one only responding to a single image of a food item (bottom, from amygdala). Adapted from [43]. (B) Example of a highly invariant multimodal concept neuron that responds to images and written and spoken name of an experimenter, but not many other images (only examples are shown). Adapted from [44]. (C) Visually selective category neuron. Trials are ordered by visual category from which the images are chosen (all images shown are different). Stimulus on/offset is shown with dashed lines or a grey box (C). (D) Example memory-selective neuron. Note that the images shown during novel (green) and familiar (red) trials are the same Stimulus on/offset is shown with a grey box. Adapted from [57]. (E) Contextual reinstatement during free recall by middle temporal gyrus neurons. Adapted from [81]. (F-G) Contextual reinstatement by VS neurons during recognition memory. Adapted from [77].