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Tone deafness: a disorder of the mind’s ear Tim Griffiths Auditory Group, Newcastle University Cognitive Neurology Clinic, Newcastle General Hospital http://www.staff.ncl.ac.uk/t.d.griffiths/tdg.html Supported by the Wellcome Trust (UK)
My work: Ordered and disordered acoustic worlds The Ear The person 2. NEUROLOGY Disordered sound pattern analysis Speech Music Environmental Sound The mind’s ear 1. NEUROSCIENCE Ordering of sound pattern
How do we explain this? Click picture for sound
Famous subjects with tone deafness Che Guevara Milton Friedman
Tone deafness: some basic questions His brain? His DNA? His neurons? His deficit?
Construction of the pitch percept 400Hz sine 400Hz fundamental Harmonic 1 - 6 400Hz fundamental Harmonic 4 - 6 frequency (kHz) time (s) frequency (kHz) frequency (kHz) time (s) time (s) 5 5 5 0.1 0.1 0.1 Common pitch explained better by time structure than frequency structure of stimulus