This research investigates how sign language experience reshapes the brain’s visual system. MRI studies show expanded hand-processing regions and reorganised face areas in both deaf and hearing signers, even when learning occurs in adulthood. The findings highlight neural plasticity and reveal how visual language transforms perception and brain organisation.

This research uses cavefish to reveal how evolution reshapes the brain. By comparing surface and cave-adapted forms, it shows that neural circuits lost to vision are repurposed for touch and smell. These findings demonstrate how evolution refines existing brain structures to meet environmental demands.