Preoperative Visual Measures of Verbal Learning and Memory and their Relations to Speech Recognition After Cochlear Implantation.
Christin Ray, David B Pisoni, Emily Lu and 2 others
PMID 35319518WHAT IT FOUND
Adults waiting for a cochlear implant scored lower on visual word-memory tests than normal-hearing peers.
Pre-implant scores on how quickly people learned word lists and grouped them by meaning predicted how well they understood sentences six months after surgery.
Key findings
01Cochlear implant candidates scored significantly lower on visual verbal learning and memory tests than normal-hearing controls, even when hearing ability was removed from the test.
02The specific memory skills that best separated implant candidates from controls were grouping words by meaning, resisting interference from new word lists, and recalling the most recent items.
03Pre-implant scores on learning rate, semantic grouping, and subjective grouping predicted sentence recognition in quiet and noise six months after implantation.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The post-implant analysis relied on only 32 of the original 49 candidates, as others did not return for the six-month follow-up. The study is preliminary and did not include a 12-month follow-up for the full group. The sample size for the predictive analysis was small, though the statistical method used was designed to handle correlated variables in limited samples.
The easy way to misread this
Do not interpret the visual memory test as a measure of hearing ability or auditory processing. The test was presented visually to isolate cognitive skills, so low scores reflect difficulties with verbal learning strategies, not the quality of the cochlear implant or the auditory nerve.