ABSTRACT
Indications for hearing implants in profoundly deaf patients have been presented. Auditory pathway status was evaluated by application of electric stimulation of cochlear nerve. The electric stimulus originated from Cochlear Nerve Tester. Obtained sound sensations might be revealed on ABR pattern.
Subject(s)
Cochlea/physiopathology , Cochlear Nerve/physiopathology , Electrodiagnosis/instrumentation , Action Potentials/physiology , Auditory Pathways/physiopathology , Child , Cochlea/innervation , Cochlear Implants , Deafness/physiopathology , Deafness/rehabilitation , Evoked Potentials, Auditory, Brain Stem/physiology , Humans , Nerve Fibers/physiologyABSTRACT
Indications for hearing implants in profoundly deaf patients have been presented. Auditory pathway status was evaluated by application of electrical stimulation of cochlear nerve. The electrical stimulus originated from Cochlear Nerve Tester. Obtained sound sensations might be revealed on ABR pattern.
Subject(s)
Cochlear Nerve/physiology , Deafness/physiopathology , Otolaryngology/instrumentation , Cochlear Implants , Deafness/surgery , Electric Stimulation , Equipment Design , HumansABSTRACT
PIP: These are preliminary results of a new method of tracing uterine contractions by impedance recorded with 2 electrodes placed 15 cm from the midline slightly below the umbilicus. A high-frequency electric current of constant intensity was the source of the signal. Results from 2 primiparae in term labor are presented: 1 was spontaneous and uncomplicated; the second had first contractions of low amplitude, then periods of permanent contracture treated with a spasmolytic (Buscopan), and finally a normal delivery. Tracings of typical contractions, confirmed by tocography, resembled a rapidly rising curve (1-3 seconds) associated with beginning of labor pain, a rounded peak, an exponential descent, a brief horizontal pause at the isoelectric line whose duration varied with the length of the contraction, a rapid fall (1-3 seconds), a rounded nadir, and finally an exponential return to the isoelectric line. The return to base line was preceded 10-15 seconds by a slight dip. This type of tracing was associated with normal contractions and was not influenced by fetal movements. The method delineated contractions, relaxations, and the effect of medication instantly.^ieng
