Slide 1

Plan

Motor systems

Slide 4

Slide 5

Slide 6

Hierarchical & Parallel Organization of the motor systems

Organization of Movements

Organization of Movements

Reflexes

Knee Jerk

Reflexes

Why Disynaptic?

Spinal Circuits

Motor I/O

Postural adjustments

Voluntary movements

The goal of voluntary movements is represented… somewhere

Voluntary movements are
organized by motor programs

Kinematic & Dynamic Programs
in Reaching

Summary

Motor systems

Motor Pathways Hierarchy

Slide 24

Slide 25

Slide 26

Slide 27

Motor pathways organized around the motor nuclei

Spinal Motor Columns

Ventral Horn
Organization:
Proximal - distal rule

Brain Stem Motor Paths

Brain Stem Pathways

Cortical
Motor
Paths

Cortical motor paths

Origins of cortical motor paths

Why bother study the motor pathways?