Device for deriving acoustically evoked brain potentials
First Claim
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1. A device for deriving acoustically evoked brain potentials in brainstem audiometry from electrodes applied to a head of a subject, the device comprising:
- a plurality of electrodes comprising at least one pickup electrode and a reference electrode, to be applied to different points on the head;
a frame that holds all of the plurality of electrodes relative to one another in a substantially fixed spatial orientation;
the frame permitting manual or mechanical holding of the device on the head of the subject while simultaneously applying all of the plurality of electrodes to corresponding pickup points on the head;
at least one electroacoustic converter, the frame also holding the at least one electroacoustic converter, which serves as a stimulator for acoustic stimulation of an ear.
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Abstract
Device for derivation of acoustically evoked brain potentials, with an electrode unit (2) on which electrodes (21, 22) are arranged relatively rigidly in the correct positions with respect to one another, and with an electroacoustic stimulator with an EEG amplifier (40) preferably also being mounted on the electrode unit, that can be simply held as a unit on the head of a subject.
62 Citations
20 Claims
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1. A device for deriving acoustically evoked brain potentials in brainstem audiometry from electrodes applied to a head of a subject, the device comprising:
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a plurality of electrodes comprising at least one pickup electrode and a reference electrode, to be applied to different points on the head; a frame that holds all of the plurality of electrodes relative to one another in a substantially fixed spatial orientation; the frame permitting manual or mechanical holding of the device on the head of the subject while simultaneously applying all of the plurality of electrodes to corresponding pickup points on the head; at least one electroacoustic converter, the frame also holding the at least one electroacoustic converter, which serves as a stimulator for acoustic stimulation of an ear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A device for deriving acoustically evoked brain potentials in brainstem audiometry from electrodes applied to a head of a subject, the device comprising:
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an electrode unit comprising a plurality of electrodes; a frame that holds all of the plurality of electrodes relative to one another in a substantially fixed spatial orientation; the frame permitting retention, manually or mechanically, of the electrode unit on the head of the subject while simultaneously applying all of the plurality of electrodes to corresponding derivation points on the head of the subject; and the plurality of electrodes comprising at least one pickup electrode and a reference electrode, to be applied to different points on the head; an electrode converter, which acts as a stimulator for acoustic stimulation of an ear, comprising a free-field loudspeaker, an "ear bud," a probe for otoacoustic emissions that contains a loudspeaker, or a bone conduction earphone; and a signal generator/evaluation unit that connects the electrode unit and the electroacoustic converter, supplies the electroacoustic converter with electrical stimulation signals, and evaluates the potentials picked up by the electrodes. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification