Delta waves in the EEG can be induced by the intravenous administration of atropine. In cats we have investigated with several computer averaging programs the relationship of extracellular unit discharge to the EEG on the surface and within the cortex. We have also studied the laminar profiles and...
(redirected fromDelta waves) Thesaurus Medical n. An electrical oscillation occurring in the human brain at a frequency of less than about four hertz as recorded on an electroencephalogram, associated with a state of deep sleep or unconsciousness. Also calleddelta rhythm. ...
(upward, as per EEG polarity convention) waves that stand out from the background activity. As the name implies, they appear prominently in EEG derived from electrodes placed near Cz. The K-complex begins much like a vertex sharp wave but is immediately followed by a large, usually much ...
Asymmetric interhemispheric delta waves during all-night sleep in humans 来自 Semantic Scholar 喜欢 0 阅读量: 19 摘要: Objective: In order to better understand the asymmetry of brain function during sleep, period-amplitude analysis of delta EEG activity was performed on polysomnograms (PSGs) in ...
Synonyms Delta activity ; Slow waves Definition Signals in the human EEG in the frequency range from near-DC to ∼4 Hz are considered as part delta activity. Consensus on the functional correlate exists; it reflects the amount of sleep pressure. Indeed, its amplitude fluctuates dramatically ...
A special type of delta waves with a duration of 1–3 sec which, because of their saw-tooth or zed shape in the EEG, we have named 'zeta waves' has been described. They occur particularly in cases with rather severe brain lesions, usually with an acute or subacute onset and a space ...
and midnight was selected for EEG power spectral analysis. The power in the frequency band related to low-frequency delta waves (0.5–1.5 Hz, "delta band") and the power in the frequency band related to sigma spindles (11.5–15.5 Hz, "sigma band") were analyzed. Group 1 infants showed ...
It has been hypothesized that visually scored stage 4 EEG (dense, high amplitude 0.5–3 Hz (delta) waves) is a correlate of a metabolic process that reverses some of the effects of waking on the brain. The results of nap studies appear inconsistent with this hypothesis since late naps produ...
Given N, you are requested to find out how many kinds of different delta waves of otaku. Input There are no more than 20 test cases. There is only one line for each case, containing an integer N (2 < N <= 10000) Output Output one line for each test case. For the answer may be...
Purpose: The EEG pattern of epilepsy with continuous spike-waves during slow wave sleep (CSWSS) is characterized by an almost continuous activation of spike-and-slow-wave complexes during nREM sleep with a marked reduction of EEG abnormalities during REM sleep and the awake state. Experimental stu...