Abstract
Developmental effects on gap detection and temporal order performance were examined cross sectionally in 18 males between 6 and 17 years, while age effects in adults were examined cross sectionally in 38 males and 23 females between 18 and 70 years of age. Thresholds for gap detection and temporal order were measured using a 21FC procedure. The gap was embedded in broadband noise while the signals for the temporal order task were 1000- and 2500-Hz tones. Percent correct detection and reaction time were assesed during a 15 min go-no-go vigilance task with a tonal signal at 10-dB sensation level in white noise. There was a statistically significant correlation between the young boys ages and temporal order threshold. Gap detection and temporal order thresholds were significantly correlated with age for the adult males but the relation was most marked after age 50. Significant correlations were found between age and all measures for the females. In addition to main effects for sex and age, there was a significant sex by age interaction for gap detection.
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