Neural encoding of linguistic speech cues is unaffected by cognitive decline, but decreases with increasing hearing impairment

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Aug. 17, 2024

The multivariate temporal response function (mTRF) is an effective tool for investigating the neural encoding of acoustic and complex linguistic features in natural continuous speech. In this study, we investigated how representations speech derived from stimuli are related to early signs cognitive decline older adults, taking into account effects hearing. Participants without (

Language: Английский

Hearing and cognitive decline in aging differentially impact neural tracking of context-supported versus random speech across linguistic timescales

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(12), P. e0313854 - e0313854

Published: Dec. 6, 2024

Cognitive decline and hearing loss are common in older adults often co-occur while investigated separately, affecting the neural processing of speech. This study interaction between cognitive decline, loss, contextual cues speech processing. Participants aged 60 years were assessed for using Montreal Assessment ability a four-frequency pure tone average. They listened to in-house–designed matrix-style sentences that either provided supportive context or random, we recorded their electroencephalography. Neurophysiological responses analyzed through auditory evoked potentials tracking at different linguistic timescales (i.e., phrase, word, syllable phoneme rate) phase-locking values. The results showed was associated with decreased response accuracy recognition task. significantly impacted P2 component potentials, influenced word rates, but not phrase rates. Contextual enhanced rate. These findings suggest differentially affect mechanisms underlying processing, playing significant role enhancing rate tracking. emphasises importance considering both factors when studying people highlights need further research investigate interplay

Language: Английский

Hearing and cognitive decline in aging differentially impact neural tracking of context-supported versus random speech across linguistic timescales

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 16, 2024

Abstract Cognitive decline and hearing loss are common in older adults often co-occur while investigated separately, affecting the neural processing of speech. This study interaction between cognitive decline, loss, contextual cues speech processing. Participants aged 60 years were assessed for using Montreal Assessment ability a four-frequency pure tone average. They listened to in-house-designed matrix-style sentences that either provided supportive context or random, we recorded their electroencephalography. Neurophysiological responses analyzed through auditory evoked potentials tracking at different linguistic timescales (i.e., phrase, word, syllable phoneme rate) phase-locking values. The results showed was associated with lower chance correct recognition task. significantly impacted P2 component potentials, influenced word rates, but not phrase rates. Contextual enhanced rate. These findings suggest differentially affect mechanisms underlying processing, playing significant role enhancing rate tracking. emphasises importance considering both factors when studying people highlights need further research investigate interplay

Language: Английский