Periodicity analysis of sleep EEG in the second and minute ranges — example of application in different alpha activities in sleep

Scheuler, W.; Rappelsberger, Peter; Schmatz, F.; Pastelak-Price, C.; Petsche, H.; Kubicki, S

doi:10.1016/0013-4694(90)90017-e

Cited by 35 publications

(17 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1996; Terasawa, 1998), which points to a possible contribution of brainstem noradrenergic afferents in the joint modulation of neocortical DC potential and infra‐slow oscillatory activity (Terzano et al . 1985; Scheuler et al . 1990; Novak et al .…”

Section: Discussionmentioning

confidence: 99%

“…NPY has been shown to produce shifts in EEG frequencies and amplitude, particularly over the frontal cortex, and to in¯uence cortical excitability in vitro as well as after intracerebroventricular administration in rats (Zini et al, 1984;Ehlers et al, 1997;Klapstein & Colmers, 1997;Woldbye et al, 1997). NPY closely interacts with the noradrenergic system in LHRH pulse generation (Wuttke et al, 1996;Terasawa, 1998), which points to a possible contribution of brainstem noradrenergic afferents in the joint modulation of neocortical DC potential and infra-slow oscillatory activity (Terzano et al, 1985;Scheuler et al, 1990;Novak et al, 1992). However, LHRH itself could also be involved in the transfer of action to the neocortex.…”

Section: Cortical Mechanisms Of DC Potentials and Slow Periodic Eeg Amentioning

confidence: 99%

See 1 more Smart Citation

Changes in direct current (DC) potentials and infra‐slow EEG oscillations at the onset of the luteinizing hormone (LH) pulse

Marshall¹,

Mölle²,

Fehm

et al. 2000

Eur J of Neuroscience

View full text Add to dashboard Cite

An essential function of the neuroendocrine system lies in the coordination of hypothalamo-pituitary secretory activity with neocortical neuronal activity. Cortical direct current (DC) potential shifts and EEG were monitored in conjunction with the circulating concentration of luteinizing hormone (LH) in humans while asleep to assess a hypothalamic-neocortical interaction. The onset of an LH pulse was accompanied (i) at frontocortical locations by a transient positive DC potential shift of approximately 3 min duration and peak amplitude 50 microV; (ii) at frontal and central locations by an increase in power of infra-slow EEG oscillations for periodicities between 64 and 320 s. Results uniquely demonstrate a coupling of hypothalamo-pituitary activity with regulation of neocortical excitability.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Cortical Mechanisms Of DC Potentials and Slow Periodic Eeg Amentioning

confidence: 99%

Changes in direct current (DC) potentials and infra‐slow EEG oscillations at the onset of the luteinizing hormone (LH) pulse

Marshall¹,

Mölle²,

Fehm

et al. 2000

Eur J of Neuroscience

View full text Add to dashboard Cite

show abstract

“…We have found few other reports of local patterned mosaics of fluctuating coherence (10,20,21). There are numerous indications that the spatial and temporal structures of dynamic functional features can be quite local in space and transient in time (16,17,(22)(23)(24)(25).…”

Section: Methodsmentioning

confidence: 99%

Temporal fluctuations in coherence of brain waves.

Bullock

McClune

Achimowicz

et al. 1995

Proc. Natl. Acad. Sci. U.S.A.

128

View full text Add to dashboard Cite

As a measure of dynamical structure, shortterm fluctuations of coherence between 0.3 and 100 Hz in the electroencephalogram (EEG) of humans were studied from recordings made by chronic subdural macroelectrodes 5-10 mm apart, on temporal, frontal, and parietal lobes, and from intracranial probes deep in the temporal lobe, including the hippocampus, during sleep, alert, and seizure states. The time series of coherence between adjacent sites calculated every second or less often varies widely in stability over time; sometimes it is stable for half a minute or more. Within 2-min samples, coherence commonly fluctuates by a factor up to 2-3, in all bands, within the time scale of seconds to tens of seconds. The power spectrum of the time series of these fluctuations is broad, extending to 0.02 Hz or slower, and is weighted toward the slower frequencies; little power is faster than 0. The present report is one of a series aiming at some insight into the fine structure in space and time of the dynamical signs provided in the compound field potentials, as recorded directly on or in the brain (1-9). The main goal is to test the hypothesis that one measure of cooperativity at each frequency-namely, coherence-varies in time on the scale of seconds or fractions of a second, with evidence of more than stochastic structure, and that the fluctuation is different for closely spaced loci. We will show in addition that a wide range of frequency components of the EEG tend to covary in coherence, contrary to the usual assumption of independent oscillators. MATERIALS AND METHODS Subdural EEG recordings from four patients were supplied by V.J.I.-M. from the University of California, San Diego, Epilepsy Center. Neurosurgeon J. F. Alksne had implanted plastic subdural strips bilaterally on frontal, temporal, and parietal lobes, each strip carrying a row of eight electrodes at 10-mm intervals, for long-term recording for localization of seizure foci. We took 2-to 4-min samples of EEG during slow-wave (stage 2-3) sleep, during alert interictal periods, and during electrical seizures. Some samples were taken in the operating room when the patient was sedated (nitrous oxide, Fentanyl, and Forane) but awake, able to respond to commands and questions, because recording arrays with 5-mm spacing were used.Depth

show abstract

“…In spectral analysis [ 1 ] the NREM alpha activity reveals a uniform stage-and cycle-dependent variation in the whole alpha range from 7 to 11 Hz; an investigation of the physiologic periodicities in the second and minute range [22], how ever, had already shown that the two alpha bands (7-9 Hz, 9-11 Hz) are not closely coupled; thus they can not have a common 'generator'. The reaction to fluni trazepam now allows an almost perfect separation: only the activity in the alpha 2 band reacts positively with a power increase in the frontal areas during sleep stages 3 and 4 whereas the alpha 1 band lacks any kind of a specific reaction in the frontal areas during stages 3 and 4 and cycles 1 and 2; instead a negative response develops in an atypical area (parietooccipital) as well as an atypical sleep stage (stage 2).…”

Section: Discussionmentioning

confidence: 99%

“…The analysis was performed for sleep activities which -according to previous investigations [1,3,8,22] -can be clearly defined and interpreted; this included activities in the following frequency bands: delta (0.5-2 Hz), alpha 1 (7-9 Hz), alpha 2 (9-11 Hz), sigma 1 (11-13 Hz) and sigma 2(13-15 Hz). The delta band comprises the back ground activity of NREM sleep corresponding to restora tive functions (process S; [23]).…”

Section: Introductionmentioning

confidence: 99%

EEG Sleep Activities React Topographically Different to GABAergic Sleep Modulation by Flunitrazepam: Relationship to Regional Distribution of Benzodiazepine Receptor Subtypes?

Scheuler¹

1990

Neuropsychobiology

View full text Add to dashboard Cite

Spectral analysis was performed to study the response of various EEG sleep activities to a modification of GABAergic sleep regulation by flunitrazepam. We observed sleep stage- and sleep cycle-dependent differences in the topographic distribution of the reactions. An increase in power density was found in the frontal regions for the alpha 2 and sigma 1 frequency band whereas a decrease in power density was emphasized in the posterior regions for the delta and alpha 1 frequency band. These topographic differences might be related to the regional distribution of benzodiazepine receptor subtypes.

show abstract

Periodicity analysis of sleep EEG in the second and minute ranges — example of application in different alpha activities in sleep

Cited by 35 publications

References 26 publications

Changes in direct current (DC) potentials and infra‐slow EEG oscillations at the onset of the luteinizing hormone (LH) pulse

Changes in direct current (DC) potentials and infra‐slow EEG oscillations at the onset of the luteinizing hormone (LH) pulse

Temporal fluctuations in coherence of brain waves.

EEG Sleep Activities React Topographically Different to GABAergic Sleep Modulation by Flunitrazepam: Relationship to Regional Distribution of Benzodiazepine Receptor Subtypes?

Contact Info

Product

Resources

About