The Experts below are selected from a list of 82575 Experts worldwide ranked by ideXlab platform
M Specht - One of the best experts on this subject based on the ideXlab platform.
-
time variant non linear phase coupling analysis of eeg burst patterns in sedated patients during electroencephalic burst suppression period
Clinical Neurophysiology, 2001Co-Authors: B Schack, C Schelenz, H Witte, M Helbig, M SpechtAbstract:Abstract Objectives : The quadratic phase-coupling (QPC) within burst patterns during electroencephalic burst suppression has been quantified. Methods : It can be shown that a QPC exists between the Frequency Ranges 0–2.5 and 3–7.5 Hz and between the Frequency Ranges 0–2.5 and 8–12 Hz. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. Results : The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes. Conclusions : It can be suggested that the method introduced for the quantification of the sedation depth should be used.
-
Quantification of transient quadratic phase couplings within EEG burst patterns in sedated patients during electroencephalic burst-suppression period.
Journal of physiology Paris, 2000Co-Authors: H Witte, C Schelenz, B Schack, M Helbig, P Putsche, K Schmidt, M SpechtAbstract:The time dynamics of the quadratic phase coupling within burst patterns during electroencephalic burst-suppression has been quantified. It can be shown that a transient quadratic phase coupling (QPC) exists between the Frequency Ranges 0 to 2.5 and 3 to 7.5 Hz and between the Frequency Ranges 0 to 2.5 and 8 to 12 Hz. The QPC can be explained by an amplitude modulation, where the slow rhythm modulates the rhythmic activities with a higher Frequency. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes.
B Schack - One of the best experts on this subject based on the ideXlab platform.
-
time variant non linear phase coupling analysis of eeg burst patterns in sedated patients during electroencephalic burst suppression period
Clinical Neurophysiology, 2001Co-Authors: B Schack, C Schelenz, H Witte, M Helbig, M SpechtAbstract:Abstract Objectives : The quadratic phase-coupling (QPC) within burst patterns during electroencephalic burst suppression has been quantified. Methods : It can be shown that a QPC exists between the Frequency Ranges 0–2.5 and 3–7.5 Hz and between the Frequency Ranges 0–2.5 and 8–12 Hz. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. Results : The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes. Conclusions : It can be suggested that the method introduced for the quantification of the sedation depth should be used.
-
Quantification of transient quadratic phase couplings within EEG burst patterns in sedated patients during electroencephalic burst-suppression period.
Journal of physiology Paris, 2000Co-Authors: H Witte, C Schelenz, B Schack, M Helbig, P Putsche, K Schmidt, M SpechtAbstract:The time dynamics of the quadratic phase coupling within burst patterns during electroencephalic burst-suppression has been quantified. It can be shown that a transient quadratic phase coupling (QPC) exists between the Frequency Ranges 0 to 2.5 and 3 to 7.5 Hz and between the Frequency Ranges 0 to 2.5 and 8 to 12 Hz. The QPC can be explained by an amplitude modulation, where the slow rhythm modulates the rhythmic activities with a higher Frequency. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes.
H Witte - One of the best experts on this subject based on the ideXlab platform.
-
time variant non linear phase coupling analysis of eeg burst patterns in sedated patients during electroencephalic burst suppression period
Clinical Neurophysiology, 2001Co-Authors: B Schack, C Schelenz, H Witte, M Helbig, M SpechtAbstract:Abstract Objectives : The quadratic phase-coupling (QPC) within burst patterns during electroencephalic burst suppression has been quantified. Methods : It can be shown that a QPC exists between the Frequency Ranges 0–2.5 and 3–7.5 Hz and between the Frequency Ranges 0–2.5 and 8–12 Hz. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. Results : The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes. Conclusions : It can be suggested that the method introduced for the quantification of the sedation depth should be used.
-
Quantification of transient quadratic phase couplings within EEG burst patterns in sedated patients during electroencephalic burst-suppression period.
Journal of physiology Paris, 2000Co-Authors: H Witte, C Schelenz, B Schack, M Helbig, P Putsche, K Schmidt, M SpechtAbstract:The time dynamics of the quadratic phase coupling within burst patterns during electroencephalic burst-suppression has been quantified. It can be shown that a transient quadratic phase coupling (QPC) exists between the Frequency Ranges 0 to 2.5 and 3 to 7.5 Hz and between the Frequency Ranges 0 to 2.5 and 8 to 12 Hz. The QPC can be explained by an amplitude modulation, where the slow rhythm modulates the rhythmic activities with a higher Frequency. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes.
C Schelenz - One of the best experts on this subject based on the ideXlab platform.
-
time variant non linear phase coupling analysis of eeg burst patterns in sedated patients during electroencephalic burst suppression period
Clinical Neurophysiology, 2001Co-Authors: B Schack, C Schelenz, H Witte, M Helbig, M SpechtAbstract:Abstract Objectives : The quadratic phase-coupling (QPC) within burst patterns during electroencephalic burst suppression has been quantified. Methods : It can be shown that a QPC exists between the Frequency Ranges 0–2.5 and 3–7.5 Hz and between the Frequency Ranges 0–2.5 and 8–12 Hz. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. Results : The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes. Conclusions : It can be suggested that the method introduced for the quantification of the sedation depth should be used.
-
Quantification of transient quadratic phase couplings within EEG burst patterns in sedated patients during electroencephalic burst-suppression period.
Journal of physiology Paris, 2000Co-Authors: H Witte, C Schelenz, B Schack, M Helbig, P Putsche, K Schmidt, M SpechtAbstract:The time dynamics of the quadratic phase coupling within burst patterns during electroencephalic burst-suppression has been quantified. It can be shown that a transient quadratic phase coupling (QPC) exists between the Frequency Ranges 0 to 2.5 and 3 to 7.5 Hz and between the Frequency Ranges 0 to 2.5 and 8 to 12 Hz. The QPC can be explained by an amplitude modulation, where the slow rhythm modulates the rhythmic activities with a higher Frequency. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes.
M Helbig - One of the best experts on this subject based on the ideXlab platform.
-
time variant non linear phase coupling analysis of eeg burst patterns in sedated patients during electroencephalic burst suppression period
Clinical Neurophysiology, 2001Co-Authors: B Schack, C Schelenz, H Witte, M Helbig, M SpechtAbstract:Abstract Objectives : The quadratic phase-coupling (QPC) within burst patterns during electroencephalic burst suppression has been quantified. Methods : It can be shown that a QPC exists between the Frequency Ranges 0–2.5 and 3–7.5 Hz and between the Frequency Ranges 0–2.5 and 8–12 Hz. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. Results : The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes. Conclusions : It can be suggested that the method introduced for the quantification of the sedation depth should be used.
-
Quantification of transient quadratic phase couplings within EEG burst patterns in sedated patients during electroencephalic burst-suppression period.
Journal of physiology Paris, 2000Co-Authors: H Witte, C Schelenz, B Schack, M Helbig, P Putsche, K Schmidt, M SpechtAbstract:The time dynamics of the quadratic phase coupling within burst patterns during electroencephalic burst-suppression has been quantified. It can be shown that a transient quadratic phase coupling (QPC) exists between the Frequency Ranges 0 to 2.5 and 3 to 7.5 Hz and between the Frequency Ranges 0 to 2.5 and 8 to 12 Hz. The QPC can be explained by an amplitude modulation, where the slow rhythm modulates the rhythmic activities with a higher Frequency. By means of time-variant bicoherence analysis, a strong phase-locking between the modulating and the modulated component can be identified. The phase-locking is demonstrable within the first 250 ms after the burst onset and comes up to the maximum between 750 and 1250 ms. The effect is maintained over the whole first part of the burst (2 s) with a decreasing tendency after 1250 ms. All these effects cannot be found in the EEG before entering the burst suppression period (BSP). The transient coupling phenomena in the EEG bursts during BSP can be regarded as indicators for short-term interrelations between the underlying electrophysiologic processes.
