Abstract
A conditioned orientation response audiometry (COR) was performed in infants not suffering from any developmental or motor disorders, and the response format was then classified by the presence or absence of conditioning by auditory stimuli and visual stimuli, and by the sense of direction in response to the auditory stimuli. The objective was to analyze the results of 99 COR tests carried out in infants aged 4 to 35 months old.
Infants under 12 months without any formed conditioning were comparatively common (8- to 11- month old infants 37%, 4- to 7-month old infants 63%). These test results are due to Behavioral Observation Audiometry, and it was considered that the results of the COR should be clearly distinguished. Infants older than 12 months had mostly formed conditioning (12- to 17-month old infants 95%, 18- to 23-month old infants 89%, and 24- to 35-month old infants, 94%), and the COR adaptation was good.
The response format for a typical COR (turning reaction to the auditory stimulus side) was frequently present, showing that many infants had normal hearing ability. The sense of direction was inaccurate in infants with hearing difficulties, leading to many atypical results; this was particularly prominent among infants with unilateral hearing loss.
