Identification of 2.3-Mb gene locus for congenital aural atresia in 18q22.3 deletion: a case report analyzed by comparative genomic hybridization.

Objective: 18q deletion syndrome is a multiple-anomaly mental retardation syndrome associated with congenital aural atresia. The purpose of this study was to determine the frequency of the congenital aural atresia phenotype in 18q deletion syndrome patients and to delineate a potential critical region for congenital aural atresia at the 18q22.3-18q23 region.

Voice field measurements--a new method of examination: the influence of hearing on the human voice.

There are various methods to evaluate voice parameters. Original software was used to assess the voice quality by the staff of AUDIO-Fon centr Brno, Czech Republic. A group of hereditary deaf persons was examined.

[Objective evaluation of the sound deadening capability of noise protection devices].

Based on the objective assessment of the threshold of the stirrup reflex, the author evaluated the inhibitory action of seven types of protective anti-noise devices. The results are summarized in a table.

[Fluctuating perceptual hearing disorders].

The author presents a characteristic of a fluctuating perception hearing disorder of unknown aetiology. The disease is considered a special nosological unit. Two examples are given.