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Auditory Processing

Auditory Processing. Physical Dimension Perceptual Dimension. Amplitude Loudness Frequency Pitch Complexity Timbre. 05-34. W. W. Norton. 05-33. W. W. Norton. 05-36. W. W. Norton. 05-37. W. W. Norton. Mapping the Auditory System in Rhesus Monkeys. Neuroscience Program.

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Auditory Processing

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  1. Auditory Processing

  2. Physical DimensionPerceptual Dimension Amplitude Loudness Frequency Pitch Complexity Timbre

  3. 05-34 W. W. Norton

  4. 05-33 W. W. Norton

  5. 05-36 W. W. Norton

  6. 05-37 W. W. Norton

  7. Mapping the Auditory System in Rhesus Monkeys Neuroscience Program University of Iowa The University of Iowa Department of Psychology Behavioral and Cognitive Neuroscience

  8. Visual Processing Streams “WHERE” “WHAT” 25

  9. 24

  10. Auditory cortex Unfolded view of supratemporal plane and adjoining STG. Core Belt Parabelt Kaas and Hackett, PNAS 2000

  11. Auditory Projection System Early Auditory Areas Early Auditory Areas MGB MGB IC IC Lower Brainstem Lower Brainstem

  12. Auditory Projection System Early Auditory Areas Early Auditory Areas Corpus Callosum, Anterior & Posterior Commissures MGB MGB IC IC Tectal Commissures Lower Brainstem Lower Brainstem

  13. Forebrain Comm. 'Deaf' side Intact side Early Auditory Areas Early Auditory Areas MGB MGB IC IC Tectal Comm. Lower Brainstem Lower Brainstem

  14. Speakers Methods • Three surgically prepared monkeys • 2-DG injected intravenously • Wide variety of acoustic stimuli • Monkey listens passively for 45 min • Brain prepared for autoradiography • LCGU measured in ROIs throughout brain • ROIs compared for hemispheric asymmetries

  15. Auditory Stimuli Passive Listening BIRDS (10%) MUSIC (12%) ENVIRONMENTAL (18%) TONES, SWEEPS, NOISE (12%) HUMAN (9%) OTHER ANIMALS (8%) MONKEYS (31%) 29

  16. 2 DG in Intact (left) and Deafferented (right) Hemisphere Early auditory areas MGB IC

  17. A15 “Hearing” “Deaf” 30

  18. Poremba et al., Science, 2003 31

  19. Columns of 2DG activation in rSTG Completely Intact Monkey Hearing Side of Deafferented Monkey 32 Poremba et al., Science, 2003

  20. Metabolic Mapping of Visual Cortex

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