Section 5b

Outline

I. Cortical dynamics of perception

A. Principles of categorical perception by cognit activation

B. Putative steps in categorical perception by cognit activation

C. Convergence and divergence

1. Upward convergence in perceptual hierarchies promotes the association of higher-level cognits with multiple lower-level cognits.

2. Upward divergence promotes the association of a lower-level cognit with multiple higher-level cognits.

D. Cortical areas contributing to perception

1. Primary sensory cortex: involved in constructing sensory activity patterns based on low-level feature detection

2. Unimodal sensory cortex: involved in categorization of sensory activity patterns

3. Transmodal association cortex

E. Symbols

F. Perceptual constancy

II. Perceptual binding

A. Evidence from neuroelectric activity

B. Evidence from functional neuroimaging

III. Perception-action cycle