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Biomedical subjects

W Fritze

Publications and source records attributed to W Fritze.

41 records · Page 3Linked to original sources
PubMedDate not supplied

[A testing arrangement for spatial hearing].

A test-situation which concerns the spatial character of hearing is demonstrated. The subject indicates the estimated location of the stimulus. The WN is presented at a short distance from the head and thus discrepancies in distance can also be discriminated. The subjective space of man (polar system of coordinates) consists of three dimensions (horizontal, vertical and distance equals radius); for each of these three dimensions the average shift of the centre and the standard deviation (representing the error) are calculated. When testing lateral (45 degrees right or left) the average error is a little smaller for the horizontal scale than for the vertical. As far as the distance is concerned the results of the 21 subjects varied considerably; while some of the persons showed surprisingly good location ability, others supposed the noise to come from even outside the camera silens. The investigation has been carried out to contribute to the exploration of subjective acoustic space. It is also planned to apply the test as a diagnostic procedure in various neurological disturbances.

Acoustic Stimulation↗
PubMedDate not supplied

A computer-controlled binaural balance test.

The commonly used ABLB procedure (Alternate Binaural Loudness Balance) is strongly influenced by two psychological factors: the consistency of the referred side and the increase in intensity in equal stages on this side. To avoid this influence, side and intensity have to be randomized. The test has therefore been subjected to computer control and the results are continuously checked as to their significance. 26 patients with suspected inner-ear disturbance showed a significant relative recruitment; by contrast, in not one of 14 normal-hearing persons was the result positive. This test takes no longer than the conventional procedure.

Computers↗
PubMedDate not supplied

[Possible involvement of the auditory system in rheumatoid arthritis].

32 patients with definite or classical rheumatoid artritis, aged between 22 and 60 years, were checked with respect to clinical aspects, laboratory data and pure-tone audiometry. None of them had received salicylates in former times or at the time of this study. The audiometric results in the arthritis patients did not differ from those in comparison with the results of a random sample study of clinically normal ears. Ototoxic salicylate therapy may have influenced earlier results about hearing loss in rheumatoid arthritis.

Adult↗