2010.04.22 - NCM: Day 2

Gary Paige - Spatial localization
- Vision - visual reference frame
- Audition - head reference frame
- What about visual/hand reference frame?
- Auditory spatial localization is aligned to gaze
Gdowski - Postural reflexes - reweighting due to changes in inertia (head rotation)
- Reflexes adapt to changes in inertia to maintain kinematics
Paul DiZio - Development of context specific adaptation to limb and object dynamics in human arm kinematics
- Coriolis vs robot curl - give self vs environment context
- No context change for kids under six years old
- Context appears to be based on experience
Lackner - Rotating rooms
- Arguing for large feedforward component
- Likely large mismatch between golg tendon organ and muscle spindle feedback during coriolis forces
Dan Marigold - Visual input regarding the environment critical for movement
- Variability decreases right before obstacle
  - You need to get the body into a functional configuration, right?
  - How about bowling, long jump, diving board?
- Gaze fixation occurs before reaching obstacle
  - Look two steps ahead
- Did not readjust gaze
  - What about delay?
- Plane of head for two steps ahead does it correspond to keeping head in position for semicircular canals to be level?
Trevor Drew - Posterior parietal cortex in controlling precise walking in cats
- Planning
  - Posterior parietal cortex, premotor cortex, basal ganglia, lateral cerebellum
  - Lesion causes cats to hit the obstacle
  - Process visual information to adjust gains necessary for paw placement
Keir Pearson - Memory in motor movements
- Cats remember obstacles
- Parietal lesion destroys long lasting memory
- OBstacle is represented relative to the cat's body
Amy Bastian - Learning and context
- Visual context makes a difference (more transfer w/ eyes closed)
- Timing and spatial adaptation appear to occur at different rates
- Seems that adaptation occurs mostly with the spatial characteristics.

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