Physiology 3120 Lecture Notes - Lecture 23: Evoked Potential, Positron, Electroencephalography

• School: Western University
• Department: Physiology
• Course: Physiology 3120
• Professor: Anita Woods

Document Summary

3 pathways of afferent feedback: spinal reflex, motor cortex, final brain structure that controls movement, where the command signal comes from im si, cerebellum. Stimulation: electrical, magnetic (apply to motor cortex of humans, epilepsy (stimulation abnormal firing of neurons in parts of the brain that can spread, stimulating nearby and adjacent areas, epileptic charge. Recording: single neurons in brains of animals and humans, evoked potentials, eeg electroencephalography, pet positron emission tomography fmri functional magnetic resonance imaging, most common method in terms of blood flow. Inject radioactive substance: positron emitted from areas to cortex in relationship to how active those areas are. Specialized areas of cortex: somatosensory cortex in post central gyrus, visual, auditory, motor: specialized for a particular action or function, first one to be discovered was the motor cortex. Voluntary movement requires: selection of movement, planning, execution: command going through the brains.