The manual LOT test.

This study was conducted to determine the feasibility of a manual variation of the lengthened off-time (LOT)-Békésy test. The procedure requires that the audiologist vary the attenuator of an audiometer while the signal paradigms of the LOT test are delivered to the patient. Ten nonorganic hearing loss subjects were tested using the automatic LOT test and the manual LOT test. Results were equivalent to the automatic test lending support for the new procedure. The technique can be used with most wide-range audiometers without the additional expense of an automatic recording device.