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Lecture 1

HMB200H1 Lecture Notes - Lecture 1: Anterior Grey Column, Brainstem, Neurosurgery


Department
Human Biology
Course Code
HMB200H1
Professor
Franco Taverna
Lecture
1

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HMB200 Lecture 1:
A brief:
The robots would move when people approached them by stepping on levers and she thought of
reflexive behavior.
Rene:
She thought the brain controlled muscle to move via nerves which had fluids or spirits running thru
them
Descarttes:
Dualism dominated the thouhgts of neuroscience for a long time.
Modern:
The neuromuscular junction was the first thing studied in the nervous system. An axon terminates in a
muscle.
Spinal:
The sgnal on the muscle originated from the spinal cord and it originated from neurons in the ventral
horn of the spinal cord. The cell body of the neuron is in the ventral horn of the spinal cord.
Bottom:
The neurons in the spinal cord have axons that snapse with neurons in the brain. They synapse with
neurons in the motor cortex, some in the brainstem, some in the midbrain. All of them eventually have
cnnections to the motor cortex.
Brain:
The brainstem adds in species speficic behaviours.
Principles:
We keep the lower levels because they were selected for in the past and because they are used for
reflexes.
The outside:
During brain surgery he used electrodes in different parts of the brain and determined which muscles
that part of the brain moved. He is a Canadian neurosurgeon.
Organization;
There is’t a 1:1 orrespodee etwee a spefii loatio ad usles i the ody. Rather it’s a
complex of muscles that move. In the spinal cord there is a 1:1 correspondence.
Homuncular:
The hands, lips and tongue have the most dexterity.
Motor cortex:
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