HES 319 Lecture Notes - Partial Seizure, John Hughlings Jackson, Alpha Motor Neuron
Document Summary
Compare desired state to actual state (from sensors) Reacts with a correction so quickly that brain does not send command. Sensor (e. g. , muscle spindle) input processing comparator. Comparator error signal controller actuator (e. g. , muscle) Sensor detects distant events (e. g. , eye) input processing feed-forward controller. Representation of the muscles on the motor cortex. Area on motor cortex is dependent on the precision and fineness of motor control required for that body part. The jacksonian march (john hughlings jackson 19th century) Stimulation of the primary motor cortex produces movement in the periphery. Stimulation of the pre-motor areas also produces movement in the periphery. Neurons project from pre-motor areas to the primary motor cortex. Pre-motor areas are involved in planning and initiating voluntary movement. All of these motor areas receive vast input from sensory neurons. The location of the neural activity was dependent on the task the subject was performing.
