Task-dependent auditory memory performance in children using cochlear implant

OBJECTIVE: The objective of this cross-sectional study was to compare the auditory memory scores obtained using the verbal and picture-pointing response modes in children with cochlear implants and implant-age matched typically developing children. METHOD: The short-term auditory memory test consisting of word sequences ranging from two-word sequences to five-word sequences was developed and administered to 53 children using unilateral cochlear implants and 53 typically developing children matched in terms of implant age and gender. The implant age of the children ranged from 2 years 8 months to 7 years 9 months, and the mean age of implantation was 3 years 5 months. Each participant was tested twice, once using a verbal response task and once using a picture-pointing response task in two different sessions. RESULTS: The total auditory memory scores were significantly higher (P < 0.05) for the picture-pointing task as compared to the verbal recall task, especially when the memory task placed a high auditory demand and cognitive load on the children. The total auditory memory scores obtained using both the response tasks were lower in children using cochlear implants as compared to implant-age matched typically developing children (P < 0.05). CONCLUSION: The present findings indicate that the type of response task affects the performance on the short-term auditory memory test in children using cochlear implants and typically developing children, with the picture-pointing response task yielding better scores than the verbal response.