Basic auditory processing and sensitivity to prosodic structure in @entity1 with XXXX : a new look at a perceptual hypothesis.

@entity1 @entity22294 @entity73 @entity1650 @entity10870 @entity11595
@entity1 with @entity10870 ( @entity10870 ) show @entity73 and production of spoken language, and can also present with motor, auditory, and phonological difficulties. Recent auditory studies have shown impaired sensitivity to amplitude rise time (ART) in @entity1 with @entity10870 , along with non-speech rhythmic timing difficulties. Linguistically, these @entity73 should affect sensitivity to speech prosody and syllable stress. Here we used two tasks requiring sensitivity to prosodic structure, the DeeDee task and a stress misperception task, to investigate this hypothesis. We also measured auditory processing of ART, rising pitch and sound duration, in both speech ("ba") and non-speech (tone) stimuli. @entity1 were 45 @entity1 with @entity22294 aged on average 9 years and 50 age-matched controls. We report data for all the @entity22294 @entity1 (N = 45, IQ varying), as well as for two independent @entity22294 subgroupings with intact IQ. One subgroup, "Pure @entity22294 ," had intact phonology and reading (N = 16), the other, " @entity22294 @entity11595 " (N = 15), had impaired phonology and reading. Problems with syllable stress and prosodic structure were found for all the group comparisons. Both sub-groups with intact IQ showed reduced sensitivity to ART in speech stimuli, but the @entity11595 subgroup also showed reduced sensitivity to sound duration in speech stimuli. Individual differences in processing syllable stress were associated with auditory processing. These data support a new hypothesis, the "prosodic phrasing" hypothesis, which proposes that grammatical difficulties in @entity22294 may reflect perceptual difficulties with global prosodic structure related to @entity1650 in processing amplitude rise time and duration.
