October 05, 1973 • Page Image 3
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… resulting from a growth at the base of the brain, which presses upon the auditory nerve. The Hebrew University's hearing laboratory is the only place in Israel where it is possible to set up hearing tests…
…'s medical faculty. This is believed to be the first laboratory to carry out such tests using only external electrodes. Dr. Harvey Sheldon Sohmer, senior lecturer in physiology at the faculty, and Hillel Pratt…
…, PhD candidate in neurobiology, have developed a device which, by means of electrocochleography (re- cording of electric activity from the inner ear), can re- cord electric reactions in humans to vocal…
… stimuli. - like previous devices record nervous reac- tions, their instrument does not require the insertion of an electrode into the inner ear or hearing area of the subject's brain. Instead, it uses a set…
… of external elec- trodes which receive ex- tremely accurate nerve reac. tions, exactly as though the electrode were inside the ear. The device consists of a set of earphones, through which the subject…
… hears sounds of graduated inten- sity; a set of electrodes which are attached to the earlobe, the nose and the upper part of the head (vertex), and which monitor the reactions of the inner ear and the…
… base of the brain to the sounds emitted from the earphones; and a small computer ("averaging computer") which operates on-line during the examina- tion. The computer isolates the reaction to the vocal…
… stimulus from outside inter- ference or internal disturb- ances. A graph describing the re- action of the auditory nerve and that of the four "nuclei" in the base of the brain (which constitute the "audi…
…. There are four general categories of people whose hearing can be better tested by the new device than by traditional methods. These include infants whose moth- ers contracted rubella (Ger- man measles) or…