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Neural correlates of cognitive aging during the perception of facial age: the role of relatively distant and local texture information.

Komes J, Schweinberger SR, Wiese H - Front Psychol (2015)

Bottom Line: Older participants did not show a corresponding effect.ERPs yielded a trend toward reduced N170 inversion effects in older relative to younger adults independent of face age.The reduced N170 inversion effect in older adults may reflect age-related changes in neural correlates of face perception.

View Article: PubMed Central - PubMed

Affiliation: DFG Research Unit Person Perception, Friedrich Schiller University of Jena Jena, Germany ; Department of Psychology, Durham University Durham, UK.

ABSTRACT
Previous event-related potential (ERP) research revealed that older relative to younger adults show reduced inversion effects in the N170 (with more negative amplitudes for inverted than upright faces), suggestive of impairments in face perception. However, as these studies used young to middle-aged faces only, this finding may reflect preferential processing of own- relative to other-age faces rather than age-related decline. We conducted an ERP study in which young and older participants categorized young and old upright or inverted faces by age. Stimuli were presented either unfiltered or low-pass filtered at 30, 20, or 10 cycles per image (CPI). Response times revealed larger inversion effects, with slower responses for inverted faces, for young faces in young participants. Older participants did not show a corresponding effect. ERPs yielded a trend toward reduced N170 inversion effects in older relative to younger adults independent of face age. Moreover, larger inversion effects for young relative to old faces were detected, and filtering resulted in smaller N170 amplitudes. The reduced N170 inversion effect in older adults may reflect age-related changes in neural correlates of face perception. A smaller N170 inversion effect for old faces may indicate that facial changes with age hamper early face perception stages.

No MeSH data available.


Related in: MedlinePlus

Grand mean event-related potentials depicting the factors face age and orientation for young and older participants.
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Figure 3: Grand mean event-related potentials depicting the factors face age and orientation for young and older participants.

Mentions: A mixed-model ANOVA on N170 mean amplitudes (see Figures 3, 4) with the within-subject factors hemisphere (left, right), face age, orientation, and filter, and the between-subjects factor group resulted in effects of orientation, F(1, 46) = 21.87, p < 0.001, 0.32, with more negative amplitudes for inverted as compared to upright faces, and filter, F(3, 138) = 4.02, p = 0.009, 0.08, with less negative amplitudes for increasing filter strength. Post-hoc tests revealed no difference for the unfiltered vs. the 30 CPI condition, F < 1, and for the 30 compared to the 20 CPI condition, F < 1, but significantly less negative amplitudes in the 10 compared to the 20 CPI condition, F(1, 47) = 7.08, p = 0.011, 0.13. N170 amplitudes differed significantly between age groups, F(1, 46) = 4.40, p = 0.042, 0.09, with more negative amplitudes for older relative to younger adults. We further detected a trend for an interaction of orientation × group, F(1, 46) = 3.48, p = 0.069, 0.07, pointing toward larger inversion effects in the young as compared to the older group. Interestingly, orientation interacted with face age, F(1, 46) = 43.43, p < 0.001, 0.49. Post-hoc analyses for young and older faces separately revealed that inverted young faces elicited significantly more negative amplitudes than upright young faces, F(1, 47) = 34.17, p < 0.001, 0.42, whereas the corresponding pattern was not significant for old faces, F(1, 47) = 3.27, p = 0.077, 0.065. The interaction of hemisphere by group was not significant, F(1, 46) = 2.287, p = 0.137, 0.08. Moreover, no interaction of orientation by face age by group was observed, F(1, 46) = 2.01, p = 0.163, 0.04.


Neural correlates of cognitive aging during the perception of facial age: the role of relatively distant and local texture information.

Komes J, Schweinberger SR, Wiese H - Front Psychol (2015)

Grand mean event-related potentials depicting the factors face age and orientation for young and older participants.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4585215&req=5

Figure 3: Grand mean event-related potentials depicting the factors face age and orientation for young and older participants.
Mentions: A mixed-model ANOVA on N170 mean amplitudes (see Figures 3, 4) with the within-subject factors hemisphere (left, right), face age, orientation, and filter, and the between-subjects factor group resulted in effects of orientation, F(1, 46) = 21.87, p < 0.001, 0.32, with more negative amplitudes for inverted as compared to upright faces, and filter, F(3, 138) = 4.02, p = 0.009, 0.08, with less negative amplitudes for increasing filter strength. Post-hoc tests revealed no difference for the unfiltered vs. the 30 CPI condition, F < 1, and for the 30 compared to the 20 CPI condition, F < 1, but significantly less negative amplitudes in the 10 compared to the 20 CPI condition, F(1, 47) = 7.08, p = 0.011, 0.13. N170 amplitudes differed significantly between age groups, F(1, 46) = 4.40, p = 0.042, 0.09, with more negative amplitudes for older relative to younger adults. We further detected a trend for an interaction of orientation × group, F(1, 46) = 3.48, p = 0.069, 0.07, pointing toward larger inversion effects in the young as compared to the older group. Interestingly, orientation interacted with face age, F(1, 46) = 43.43, p < 0.001, 0.49. Post-hoc analyses for young and older faces separately revealed that inverted young faces elicited significantly more negative amplitudes than upright young faces, F(1, 47) = 34.17, p < 0.001, 0.42, whereas the corresponding pattern was not significant for old faces, F(1, 47) = 3.27, p = 0.077, 0.065. The interaction of hemisphere by group was not significant, F(1, 46) = 2.287, p = 0.137, 0.08. Moreover, no interaction of orientation by face age by group was observed, F(1, 46) = 2.01, p = 0.163, 0.04.

Bottom Line: Older participants did not show a corresponding effect.ERPs yielded a trend toward reduced N170 inversion effects in older relative to younger adults independent of face age.The reduced N170 inversion effect in older adults may reflect age-related changes in neural correlates of face perception.

View Article: PubMed Central - PubMed

Affiliation: DFG Research Unit Person Perception, Friedrich Schiller University of Jena Jena, Germany ; Department of Psychology, Durham University Durham, UK.

ABSTRACT
Previous event-related potential (ERP) research revealed that older relative to younger adults show reduced inversion effects in the N170 (with more negative amplitudes for inverted than upright faces), suggestive of impairments in face perception. However, as these studies used young to middle-aged faces only, this finding may reflect preferential processing of own- relative to other-age faces rather than age-related decline. We conducted an ERP study in which young and older participants categorized young and old upright or inverted faces by age. Stimuli were presented either unfiltered or low-pass filtered at 30, 20, or 10 cycles per image (CPI). Response times revealed larger inversion effects, with slower responses for inverted faces, for young faces in young participants. Older participants did not show a corresponding effect. ERPs yielded a trend toward reduced N170 inversion effects in older relative to younger adults independent of face age. Moreover, larger inversion effects for young relative to old faces were detected, and filtering resulted in smaller N170 amplitudes. The reduced N170 inversion effect in older adults may reflect age-related changes in neural correlates of face perception. A smaller N170 inversion effect for old faces may indicate that facial changes with age hamper early face perception stages.

No MeSH data available.


Related in: MedlinePlus