EEG-Ver�nderungen bei cerebralen Gef��insulten des Hirnstamms

Kendel, K.; Koufen, H

doi:10.1007/bf00242249

Cited by 11 publications

(3 citation statements)

References 21 publications

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“…The pontine portion of the ascending reticular formation, however, has a synchronizing effect 19,20 — an experimental finding confirmed by human EEG observations. 11,21 –23,13,14,24 –27 This wealth of observations (from the 1950s to the 1970s) has subsequently declined to less than a trickle — a development mirroring a general decay of interest in clinical EEG correlations and also in experimental electrophysiological experimentation. So far, one has to rely on the concept of a dysfunction of the pontine synchronizing portion of the ascending reticular formation.…”

Section: What Causes the Low Voltage Output In Vbi?mentioning

confidence: 99%

Vertebrobasilar Artery Insufficiency and Electroencephalogram

Niedermeyer

2008

Clin EEG Neurosci

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This is a renewed diagnostic approach to vertebrobasilar artery insufficiency (VBI)--a condition which stood in the focus of this author's interest several decades ago. The time for a revisitation has come. The EEG findings consist mainly of generally reduced voltage output and enhanced photic driving response. There is also some theta activity over anterior temporal and midtemporal region, but this finding is common in the early stage of all cerebrovascular disorders. Dysfunction of the pontine portion of the ascending reticular formation might be the cause of the lowered voltage output. The enhanced photic driving might be due to very light hypoxia of the visual cortex.

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Section: What Causes the Low Voltage Output In Vbi?mentioning

confidence: 99%

Vertebrobasilar Artery Insufficiency and Electroencephalogram

Niedermeyer

2008

Clin EEG Neurosci

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“…Evidences show that the amplitude of evoked potential EEG signals collected at the site of skull damage increased significantly [22][23][24]. Kendel et al compared the EEG signals at the defect site and its symmetrical position of 30 patients with skull defect and found that the amplitude of signal amplitude at the defect was five times higher than that at the same area on the opposite side [25]. Cobb et al studied 33 people with a skull fracture and found that the alpha frequency band energy was significantly improved [26].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is consistently looking for better EEG signals for better application effect. Given that previous studies have verified that signal amplitude can be changed through local skull conductivity transformations [22][23][24][25][26], we proposed a local skull electrophysiological modification (MILEM) scheme to help restore signal quality. The bone tissue covering taskrelated brain regions of the specific BCI paradigm is to be perforated by a piezoelectric drill to overcome signal decay across the skull obstacle and thus to enable the scalp electrode to obtain high-quality EEG signals.…”

Section: Introductionmentioning

confidence: 99%

Minimally Invasive Local-Skull Electrophysiological Modification With Piezoelectric Drill

Sun

Shen

Sun

et al. 2022

IEEE Trans. Neural Syst. Rehabil. Eng.

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The research on non-invasive BCI is nowadays hitting the bottleneck due to the humble quality of scalp EEG signals. Whereas invasive solutions that offer higher signal quality in contrast are suffocated in their spreading because of the potential surgical complication and health risks caused by electrode implantation. Therefore, it puts forward a necessity to explore a scheme that could both collect high-quality EEG signals and guarantee high-level operation safety.This study proposed a Minimally Invasive Local-skull Electrophysiological Modification method to improve scalp EEG signals qualities at specific brain regions. Six eight-month-old SD rats were used for in vivo verification experiment. A hole with a diameter of about 500 micrometers was drilled in the skull above the visual cortex of rats. Significant changes in rsEEG and SSVEP signals before and after modification were observed. After modification, the skull impedance of rats decreases by about 84 % , the average maximum bandwidth of rsEEG increase by 57 %, and the broadband SNR of SSVEP is increased by 5.13 dB. The time of piezoelectric drilling operation is strictly controlled under 30 seconds for each rat to prevent possible brain damage from overheating. Compared with traditional invasive procedures such as ECoG, Minimally Invasive Local-skull Electrophysiological Modification operation time is shorter and no electrode implantation is needed while it remarkably boosts the scalp EEG signal quality. This technical solution has the potential to replace the use of ECoG in certain application scenarios and further invigorate studies in the field of scalp EEG in the future.

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Vertebro-basiläres Verschlußsyndrom

Toole

Patel

1980

Zerebro-Vaskuläre Störungen

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EEG-Ver�nderungen bei cerebralen Gef��insulten des Hirnstamms

Cited by 11 publications

References 21 publications

Vertebrobasilar Artery Insufficiency and Electroencephalogram

Vertebrobasilar Artery Insufficiency and Electroencephalogram

Minimally Invasive Local-Skull Electrophysiological Modification With Piezoelectric Drill

Vertebro-basiläres Verschlußsyndrom

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