VLMs and LAMs outperform RL baselines in voxel-wise brain encoding during gameplay, with LAMs showing prompt-asymmetric organization (27% unique action vs -5% unique reasoning) strongest in frontal-motor cortex.
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Brain alignment of reasoning and action representations from vision-language and action models during naturalistic gameplay
VLMs and LAMs outperform RL baselines in voxel-wise brain encoding during gameplay, with LAMs showing prompt-asymmetric organization (27% unique action vs -5% unique reasoning) strongest in frontal-motor cortex.