The inferiorly based pharyngoplasty: effects on chronic otitis media with effusion.

Conflicting reports in the literature on the relationship between the inferiorly based pharyngeal flap and otitis media with effusion (OME) motivated a prospective study on 51 children between 3 and 12 years of age suffering from velopharyngeal incompetence. The patient group consisted of 34 children with cleft palate and 17 children with congenitally short palate. The male-female ratio was 37 to 14, showing no differences regarding physical disability.

Frequency discrimination in quiet and in noise for signals with triangular spectral envelopes.

The just-noticeable-difference in frequency (jndf) for complex signals with triangular spectral envelopes is found to depend on the envelope slope. For shallow slopes (less than 140 dB/oct), jndf increases with decreasing slope. Addition of noise also impairs frequency discrimination within a region of about 20 dB above masked threshold.

Sound emission from the ear triggered by single molecules?

If a human ear is stimulated with short sound pulses an acoustic response can be recorded many milliseconds later in the ear canal. This 'cochlear echo' was discovered by Kemp some years ago. Soon after this discovery it was found that many normal ears also emit weak sounds without being stimulated.