Much of our present understanding of sensory processing by the human brain
is obtained from studies of patients with sensory impairments. Past auditor
y studies have focused strongly on the peripheral mechanisms of hearing dis
orders, and have led to an overuse of stimuli that are good for testing the
transfer functions of simple acoustic features but are not suitable for un
derstanding the perception of complex auditory stimuli or stimulus sequence
s. Magnetoencephalography (MEG) is a non-invasive method for studying how t
he human brain processes and stores auditory information. The long-term gro
undwork in building up the basic understanding of cortical dynamics during
various ''simple'' stimulations now allows the use of more complex, real-li
fe-like stimuli, and clinical applications.