Table of contentsIntro
Computing a Voluntary Movements
Reaching movement: Three Functional levels
Major Cortical fields in planing and execution of "purposeful" movements
Frontal motor areas of the cortex
Inputs and Outputs of motor cortex
Input/output of Cortical Motor Areas
Slide 8
The motor Homunculus
Mapping the motor cortical areas by electrical stimulation
Mapping the motor cortical areas by ICMS
Activity of single neurons
First single unit recordings
Evarts experiment:: Effect of load The setup
CTNs Encode FORCE, Not Displacement
BUT: Neurons Code Also for Displacement
Innervation of muscles by Pyramidal tract neurons
Innervation of Muscles by Pyramidal Tract Neurons
Anatomical demonstration of divergent connectivity of PT neurons
Summary of first lectute
Lecture No. 2: Neuronal activity (?continued)
Making movements in "all" directions
Direction tuning
The Population Vector
Testing the First requirement for existence of PV: Tuning curves
Testing the second requirement for existence of PV 2. Distribution of PDs
Testing the Third requirement for existence of PV: Distribution of the model parameters
Population vector
Time Evolution of PV
Rotation of PV
Do single neurg29.htm">Rotation of PV
Do single neuron encode for the "type of movement" ?
"Anticipatory" Activity in MI
Preparation of movement: Set related activity in pre-motor cortex
Set Related Activity During Preparation of Movement
Construction and Coordination of Complex Movements Example: Bimanual Coordination
Loss of Inter-hemispheric Connections Helps in Spatial Decoupling of the Two Hands
SMA lesion: Loss of Bimanual skill (???)
Bimanual coord task
The Bimanual Task Consists of Four Types of Trials
Bimanual related activity
Can we use PV to represent bimanual movements?
Estimating "best fit" for PD in different types of movements
Representation of Bimanual Movements by Population Vectors
Conclusion
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Author: Zoltan Nadasdy
E-mail: zoli@md.huji.ac.li@md.huji.ac.il">zoli@md.huji.ac.il
Homepage: http://speedy2.md.huji.ac.il/~zoli/works/
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