Cochlear Implants and Listening Effort: the Interaction of Cognitive and Sensory Constraints
NYU Langone Health
460 participants
Jan 2, 2025
INTERVENTIONAL
Conditions
Summary
This study examines how cochlear implant users understand and comprehend speech in realistic communication situations. Through six experiments measuring listening effort via pupillometry and discourse comprehension, we will investigate how linguistic context, cognitive demands, and processing time affect speech understanding in CI users, and in normal-hearing controls) to identify factors underlying communication resilience versus vulnerability and develop improved, ecologically valid assessment and rehabilitation strategies.
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Interventions
* Recall of meaningful sentences, anomalous word strings, and unstructured word lists * Measurement of syntactic and semantic gain * Pupillometry during auditory and visual presentation
* Two-choice word recognition task with semantic priming/luring in multi-talker babble * Three Signal-to-Noise Ratio (SNR) levels (heavy, medium, light noise) * Confidence ratings for responses * Pupillometry measurement
* Speech recognition and recall of single sentences vs. paired sentences * Manipulation of inter-sentence semantic predictability (high vs. low) * Four test conditions: 1-sentence, 2-sentences, 2-sentences+pre-prompt, 2-sentences+post-prompt * Pupillometry during task
* Recall of 27 narrative passages (67-97 words each) * Propositional analysis scoring (main ideas, mid-level ideas, details) * Measurement of semantic hierarchy effect * Pupillometry during listening
* 24 discourse passages (150 words each): 12 narrative, 12 expository * Continuous presentation vs. self-paced presentation (stops at clause/sentence boundaries) * Measurement of pause times and comprehension recall * Pupillometry during task
* Self-Paced Sentence Comprehension * Sentences with varying syntactic complexity (active-conjoined, subject-relative, object-relative) * Continuous vs. self-paced (with pause at major clause boundary) presentation * True/false comprehension verification statements * Pupillometry measurement
Locations(2)
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NCT07279441