BIBB 109 Chapter Notes - Chapter 19: Electroencephalography, Cerebral Cortex
22 Dec 2014
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O a measurement that enables us to glimpse the generalized activity of the cerebral cortex: recording brain waves. Small voltage fluctuations are measured between selected pairs of. Electrical contribution of any single cortical neuron is exceedingly small, Amplitude of the eeg signal strongly depends on how synchronous the activity of the underlying neurons is. Number of activated cells and total amount of excitation do not really matter: eeg rhythms. Vary dramatically and often correlate with particular states of behavior. Delta: quite slow, <4hz, large in amplitude, hallmark of deep sleep waking, or dreaming stages of sleep sleep states, or the pathological state of coma. Chapter 19 sleep: the electroencephalogram (eeg, sleep, rapid eye movement (rem) sleep. Eeg looks more awake than asleep; body is immobilized; conjure up vivid dreams: non-rem sleep (slow-wave sleep)
