PO (Posterior complex of the thalamus) projects to SSp (Primary somatosensory area)

Thalamic AAV-GFP infection produced a dense columnar axonal plexus in layer IV of primary somatosensory cortex.

Made by an AI model reading the paper (claude-opus-5-5, extract@0.3.0); a second AI model (claude-opus-5-5) is unsure. “The layer IV columnar plexus is attributed to the posterior and ventral posterior thalamus together, so it cannot be assigned to PO alone.”