Dichotic listening following idiopathic precocious puberty: speech processing capacity and temporal efficiency

Area of Science:

• Neuroscience
• Developmental Psychology
• Audiology

Background:

• Idiopathic precocious puberty (IPP) involves early onset of puberty.
• The relationship between pubertal timing and cognitive functions like verbal ability and brain lateralization remains unclear.
• Adolescent development involves significant neurological and hormonal changes.

Purpose of the Study:

• To investigate if the timing of puberty affects verbal abilities and auditory processing lateralization in adolescent females.
• To compare dichotic listening performance between adolescent females with IPP and healthy controls.

Main Methods:

• A dichotic consonant-vowel (CV) discrimination task was administered.
• Participants included 11 adolescent females with IPP and 11 pair-matched normal controls.
• Auditory stimuli were presented simultaneously or with interaural delays (30 or 60 msec).

Main Results:

• No significant differences were observed between the IPP and control groups in right-ear advantage.
• Accuracy measures (double-correct and total correct) did not differ between groups.
• No differences in 'lag effects' were found, indicating similar temporal processing.

Conclusions:

• The timing of puberty, or maturation rate, is not associated with verbal ability in adolescent females.
• Early puberty does not appear to influence auditory processing or language lateralization in this cohort.
• Findings support the dissociation between pubertal timing and specific cognitive/neurological lateralization aspects.