Forward Processing of Object–Location Association from the Ventral Stream to Medial Temporal Lobe in Nonhuman Primates

Significant effects of object-location association were observed at a single-unit level in the anterior inferotemporal cortex, perirhinal cortex, and hippocampus.

• Neuronal activity was recorded in the medial temporal lobe and anterior inferotemporal cortex of two macaques while they viewed objects.
• Representations of object identity in the anterior inferotemporal cortex were combined with the subjects' viewing location.
• The perirhinal cortex provided both additive and conjunction representations of object identity and location.
• The hippocampus signaled only the conjunction of object identity and location.
• These findings indicate a stepwise combination of object and location signals in the anterior inferotemporal cortex and perirhinal cortex.

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