HD 1150 Lecture Notes - Lecture 12: Positron Emission Tomography, Melody Gardot, Transcranial Magnetic Stimulation
22 Oct 2018
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The nervous system: central vs. peripheral, somatic vs. autonomic, sympathetic vs. parasympathetic (vs. enteric, basic terms, nerve vs. neuron, ganglion vs. nucleus, plexus, cerebrum: large part of brain, cerebellum: small part of brain. Developmental cognitive neuroscience: objective: understand how cognitive functions develop over time. Starting out: the tube: specialized cells (ectodermal) fold to form a tube, tube changes shape and form to become the brain. Methods: positron emission tomography, inject w/ radioactive isotope, figure out where radiation is coming from more radiation=more blood flow=(theoretically) more brain activity, nuclear mri, electroencephalography (eeg, magnetoencephalography, transcranial magnetic stimulation, transcranial direct current stimulation. Early brain connections: after neural tube develops, largest developmental change=myelination, shift from gray white matter is key in brain connectivity and development of brain networks, greater connections, greater speed of connection, etc. Neural networks and connectivity: brain parts are connected via projection neurons, researchers study structural and functional association b/n nodes of brain.
