PSYCH 2NF3 Chapter Notes - Chapter 7: Hemoglobin, Nuclear Magnetic Resonance Spectroscopy, Top
14 Feb 2017
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An electrode is inserted directly into the brain adjacent to a single neuron. It re(cid:272)ords the (cid:374)euro(cid:374)"s ele(cid:272)tri(cid:272)al a(cid:272)ti(cid:448)ity o(cid:374) a (cid:272)o(cid:373)puter. Correlates the electrical activity with ongoing behaviour. Only few select situations, such as brain surgery, permit researchers such direct access to the central nervous system in a living human brain. In early studies, only a single recording electrode was used and a lot of electronic equipment was required to record one cell at a time. Today, we can record 2000 neurons simultaneously. Voltmeter leads placed on the skull record brain waves. Displayed (amplified) on a polygraph (meaning many graphs) The part of the (cid:374)euro(cid:374) that produ(cid:272)es the sig(cid:374)al is (cid:272)alled the sig(cid:374)al"s generator. Eeg is valuable for studying states of consciousness, including walking, sleep, and anesthesia; for diagnosing epilepsy and brain damage. Eeg recordings can provide information about the cause + location of epilepsy.
