KINESIOL 1E03 Lecture Notes - Lecture 8: Transcranial Magnetic Stimulation, Lateral Corticospinal Tract, Primary Motor Cortex
19 Feb 2016
School
Department
Course
Professor
Document Summary
Tms is a non-invasive method of stimulating the primary motor cortex in the brain. A metal coil that is capable of generating magnetic fields is placed on the scalp: the magnetic field can induce electrical currents in the brain. The magnetic field peaks in the middle. Tms can interfere with the brains function. Cortical magnification (the cortical region for the hand is larger) Action potential: all or none principle, threshold vs sub-threshold tms. It cannot distinguish between excitatory and inhibitory neurons within the region stimulated. Showed the central motor conduction time: the conduction time from the motor. Cortex to the motor neuron pool in the. Motor evoked potentials (meps: the latency of mep are referred to as. Changes in neural pathways and synapses due to changes in experiences: e. g. behaviour, environment, neural processes, thinking, and emotions) It is used for the plasticity protocol: high frequency ( 5 hz) increases cortical excitability, low frequency (0. 2 1 hz) decreases cortical excitability.
