Presentation on theme: "Auditory Greebles 2: expertise and the neural processing of the human voice Rob Leech Thomas Wood Fred Dick."— Presentation transcript:
Auditory Greebles 2: expertise and the neural processing of the human voice Rob Leech Thomas Wood Fred Dick
Auditory expertise and speech processing Left superior temporal regions preferential for speech over other sounds Does this reflect specialised mechanisms for processing speech sounds? OR Does it reflect expertise with speech sounds? Pre scan 5 hours training Post scan Training leads to Increase in activation in speech-sensitive left STS
Training Mobile phone ring tones Informationally relevant, (maybe similar to a voice calling name) Practical advantages Sounds Non-speech artificial sounds from two classes: train on one type of sound scan on both 1) Same as in Auditory Greebles 2) Another class of sounds Approx 10 exemplars of each sound Voice processing Bilateral and right Superior Temporal regions implicated in voice processing Does this reflect specialisation for processing the human voice? OR Does it reflect expertise with informationally important sounds? Belin et al, 2000
Sound Acquisition <2 sec 2 sec ? Pre Post < month Semi-sparse EPI sequence 2x approx 10 minute runs in both pre and post listening to mobile phone sounds and control sounds MPRAGE in pre scan Additional functional voice localiser in post scan (same sequence etc) - i.e., speech and non-speech vocal sounds vs high-level baseline Event related design Task = auditory odd-ball detection Behavioural measures in pre and post
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