Role of the Posterior Parietal Cortex in the Processing of Sensory Information

Experimental: Healthy arm

posterior parietal cortex (PPC) transitory inactivation

Device: Transcranial Magnetic Stimulation (TMS)

Transitory inactivation of the posterior parietal cortex and measure of sensorimotor integration.

Device: Electrical Muscle Activity (EMG)

Electrodes for the collection of EMG activity will be glued on the skin next to the first interosseus dorsalis muscle, the Abductor digiti minimi, the Extensor carpi radialis and the Abductor pollicis brevis. EMG signals will be stored on computer for off-line analysis using Signal © software (Cambridge Electronic Design, Cambridge, UK)