  The human hippocampus possesses "concept cells", neurons that fire when
presented with stimuli belonging to a specific concept, regardless of the
modality. Recently, similar concept cells were discovered in a multimodal
network called CLIP (Radford et at., 2021). Here, we ask whether CLIP can
explain the fMRI activity of the human hippocampus better than a purely visual
(or linguistic) model. We extend our analysis to a range of publicly available
uni- and multi-modal models. We demonstrate that "multimodality" stands out as
a key component when assessing the ability of a network to explain the
multivoxel activity in the hippocampus.
