(04) Nov 18, Processing of visual motion (st)
Topics addressed in the lecture:
- motion as a fundamental perceptual dimension
- motion as orientation in space-time
- the anatomical localization of motion processing
- the functional anatomy of area MT
- from spikes to perceptual performance
- linking MT directly to perception
Examples for question you should be able to answer:
- draw a space-time plot of a leftward motion
- draw a polar plot of the tuning curve of a direction- selective cell, tuned to leftward motion
- describe the topographic organization of area MT
- describe the consequences of microstimulating area MT, as determined by Salzman et al (1990)
- what is meant by a neurometric curve (see Newsome et al (1989)
Important concepts:
- space-time plots for visual motion
- tuning curve
- Reichardt detector
- psychometric and neurometric curves
- relationship between the effects of microstimulation and cortical topography