Jason Warren is a Wellcome Trust Senior Clinical Fellow and Honorary Consultant Neurologist. His research is directed toward the systems neuroscience of neurodegenerative disease, using complex sound (including environmental sounds, voices, speech and music) as a paradigm to understand the mechanisms and brain basis for impaired information processing in the dementias. This work employs a range of techniques including psychophysics, neuropsychology, structural and functional MRI. Dr Warren has broad clinical interests in the wider field of cognitive and behavioural neurology.