Devices and methods for monitoring cerebral hemodynamic conditions
First Claim
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1. A cerebro-hemodynamic measurement apparatus, comprising:
- at least one processor configured to;
receive at least one signal characterizing at least one cranial bioimpedance measurement;
correlate the at least one signal with timing of a cardiac wave;
analyze the at least one signal during a time period defined by the cardiac wave to ascertain an extent of at least one expected characteristic in the at least one signal during the time period, the analysis including;
decomposing the at least one signal into basis functions associated with parameters,determining a distribution of at least one of the parameters, andascertaining the extent of the at least one expected characteristic in the at least one signal during the time period based on the distribution of the at least one of the parameters; and
output information for predicting a physiological brain condition based on the extent of the at least one expected characteristic in the at least one signal.
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Abstract
Devices, and methods for monitoring cerebro-hemodynamic signals are disclosed. In one aspect, the devices and methods may include receiving at least one signal characterizing a bioimpedance measurement. The at least one signal may be correlated with the timing of a cardiac wave and analyzed to ascertain an extent of an expected characteristic within the signal. The extent of the expected characteristic may be used to provide information for predicting a physiological brain condition. The at least one signal may include two signals, obtained from opposite brain hemispheres, and may be a bioimpedance signal.
124 Citations
28 Claims
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1. A cerebro-hemodynamic measurement apparatus, comprising:
at least one processor configured to; receive at least one signal characterizing at least one cranial bioimpedance measurement; correlate the at least one signal with timing of a cardiac wave; analyze the at least one signal during a time period defined by the cardiac wave to ascertain an extent of at least one expected characteristic in the at least one signal during the time period, the analysis including; decomposing the at least one signal into basis functions associated with parameters, determining a distribution of at least one of the parameters, and ascertaining the extent of the at least one expected characteristic in the at least one signal during the time period based on the distribution of the at least one of the parameters; and output information for predicting a physiological brain condition based on the extent of the at least one expected characteristic in the at least one signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for providing information for predicting a physiological brain condition, comprising:
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receiving at least one signal characterizing at least one cranial bioimpedance measurement obtained via at least one electrode; correlating, by at least one processor, the at least one signal with timing of a cardiac wave; analyzing, by at least one processor, the at least one signal during a time period defined by the cardiac wave to ascertain an extent of at least one expected characteristic in the at least one signal during the time period, the analysis including; decomposing the at least one signal into basis functions associated with parameters, determining a distribution of at least one of the parameters, and ascertaining the extent of the at least one expected characteristic in the at least one signal during the time period based on the distribution of the at least one of the parameters; and outputting information for predicting a physiological brain condition based on the extent of the at least one expected characteristic in the at least one signal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification