Movement Planning Flashcards
What is an extrinsic coordinate system
Sensory information -visual and auditory
What is an intrinsic coordinate system
Proprioceptive information
Describe posterior parietal cortex
LIP: for saccadic eye movement
PRR: for reaching
AIP: for grasping
Describe the sources of variability
Input variability: estimation of location and target-sensory noises
Intrinsic variability: sensors and motor neurons- fluctuations in membrane potentials (neural noise) this limits accuracy and precision of the control
Output variability: caused by motor neurons and muscles (increased excitability and more motor beurons) this is called signal dependant noise
What is a forward model in kinematics
Models that solve forward kinematic
What are models that solve inverse kinematics
Called inverse models
What does the inverse model determine
It determines the motor commands that will produce a behavioural goal
What does the forward model do
Forward model simulates interaction w the motor system and the world and can predict behaviours
