Activation in frontal and parietal cognitive regions is positively correlated with speech-in-noise behavioral performance in older listeners, supporting a compensatory role¶

Claim · All claims
Evidence · 1 study · causal r1 · q3 · i3 large
Currency · newest study 2009 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i3 Brain activation in right precentral gyrus/middle frontal gyrus and right precuneus correlated positively with behavioral accuracy across all three listening conditions in older subjects. → Wong Patrick C. M. 2009

Evidence¶

Wong Patrick C. M. 2009¶

Wong Patrick C. M., Jin James Xumin, Gunasekera Geshri M., Abel Rebekah, Lee Edward R., Dhar Sumitrajit. (2009). Aging and Cortical Mechanisms of Speech Perception in Noise. Neuropsychologia 47(3), 693-703. https://doi.org/10.1016/j.neuropsychologia.2008.11.032

q3 · i3 · causal · r1

Brain-behavior correlation analysis in the older group (n = 12) using percent signal change in clusters with higher activation in older subjects. Right precentral gyrus showed positive correlations with accuracy in all conditions (e.g. "Quiet: Pearson’s r = .779, p < .001"); right precuneus showed similar positive correlations (e.g. r = .539, p = .035 in Quiet).

"For right precentral gyrus (extending to middle frontal gyrus and BA 6) [peak voxel at 30, −14 49; 1126 cubic-mm], a significant positive correlation was found between brain activation and behavioral accuracy across all three conditions [Quiet: Pearson’s r = .779, p < .001; SNR 20: r= .662, p =.010; SNR =5: r = .510, p = .045]"

Discussion¶

Learner Variables¶

• Auditory Processing — predictor: learners who differ on it differ in outcomes

Related Claims¶

• Older adults show a more diffused cortical network involving frontal and ventral regions, whereas younger adults show a streamlined auditory network during speech-in-noise processing — related
• Older adults show reduced activation in auditory cortex and increased activation in prefrontal and precuneus regions during speech-in-noise processing — related
• Middle temporal gyrus activation in older listeners correlates with performance only in non-debilitating listening conditions, not in severe noise — related
• Group x condition interactions show condition-dependent activation differences in superior temporal, parietal, cingulate, medial frontal, and middle temporal regions — related
• Older adults show reduced accuracy in severe noise (SNR -5) but perform comparably to younger adults in quiet and moderate noise (SNR 20) — related