Plasticity and Functional recovery - limitation: Negative plasticity - Prolonged drug use can result in poorer cognitive functioning and an increased risk of dementia.
Negative plasticity - 60-80% of amputees experience phantom limb syndrome; which is thought to be due to cortical remapping of somatosensory area which occurs after limb loss. Usually unpleasant and painful.
Demonstrated how 40 hours of golf training in 40-60 year olds could change neural representations of movement in brain; fMRI showing reduced motor cortex activity - refined/efficient neural pathways.
Early evidence of plasticity and functional recovery; sewed 1 eyelid of kitten shut, analysing cortical response. Found visual cortex connected to shut eye had not become useless, but now processed visual info. from open eye.