The book identifies how excitory and inhibitory messages in the human nervous system combine and coordinate to affect attention, cognition, memory and language. Communication within the nervous system involves the excitation and inhibition of neurons. How these processes interact to affect cognition and behavioural performance has been an area of ongoing investigation that is once again at the forefront of cognitive research. This volume brings together cognitive psychologists and neuroscientists to identify the neural evidence for inhibitory mechanisms in cognitive processing and discusses how these inhibitory mechanisms subsequently affect cognition and behaviour.