title: Some effects of prestimulus activity and length of prestimulus observation judgements of infants' auditory behaviour.
abstract: The auditory responses of nine 6-week-old and ten 6-month-old infants were assessed subjectively by a group of four observers. These responses were evaluated as a function of (1) prestimulus activity level and (2) duration of prestimulus observation. Response assessment for both ages was significantly affected by the first but not by the second. The percentage of responses for both ages tended to decrease with increasing prestimulus activity state. The findings are compared with the similar study of Langford et al. [1974] on neonates.
mesh_terms: D000161:Acoustic Stimulation; D000367:Age Factors; D001299:Audiometry; D001307:Auditory Perception; D001309:Auditory Threshold; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male