Auditory Cortex: Complex patterns
• Progressively more complex
• 15 distinct tonotopic areas.
• A1: Primary Auditory Cortex:
Superior temporal gyrus
• Like other sensory cortex:
– 6 layers
– Input layer: IV,
– V: back project to MGB.
– VI: back project to IC
– Cortical columns (map),
• Logarithmic map of
frequency.
• Perpendicular to freq axis:
– binaural interactions: EE, EI,
– rising or falling pitch