Older adults’ neural activation in the reward circuit is sensitive to face trustworthiness
| Autor: | Leslie A. Zebrowitz, Angela H. Gutchess, Jasmine Boshyan, Nouchine Hadjikhani, Noreen Ward |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Dorsum Aging medicine.medical_specialty Cognitive Neuroscience Audiology Trust Amygdala Article 050105 experimental psychology Judgment Young Adult 03 medical and health sciences Behavioral Neuroscience 0302 clinical medicine Reward Age groups medicine Humans 0501 psychology and cognitive sciences Young adult Anterior cingulate cortex Facial expression 05 social sciences Facial Expression Trustworthiness medicine.anatomical_structure Face Female Psychology 030217 neurology & neurosurgery |
| Zdroj: | Cogn Affect Behav Neurosci |
| ISSN: | 1531-135X 1530-7026 |
| Popis: | We examined older adult (OA) and younger adult (YA) neural sensitivity to face trustworthiness in reward circuit regions, previously found to respond to trustworthiness in YA. Interactions of face trustworthiness with age revealed effects exclusive to OA in the amygdala and caudate, and an effect that was not moderated by age in the dorsal anterior cingulate cortex (dACC). OA, but not YA, showed a nonlinear amygdala response to face trustworthiness, with significantly stronger activation response to high than to medium trustworthy faces, and no difference between low and medium or high. This may explain why an earlier study investigating OA amygdala activation to trustworthiness failed to find a significant effect, since only the linear low versus high trustworthiness difference was assessed. OA, but not YA, also showed significantly stronger activation to high than to low trustworthy faces in the right caudate, indicating a positive linear effect, consistent with previous YA research, as well as significantly stronger activation to high than to medium but not low trustworthy faces in the left caudate, indicating a nonlinear effect. Activation in dACC across both age groups showed a positive linear effect consistent with previous YA research. Finally, OA rated the faces as more trustworthy than did YA across all levels of trustworthiness. Future research should examine whether the null effects for YA were due to our inclusion of older faces. Research also should investigate possible implications of our findings for more ecologically valid OA responses to people who vary in facial trustworthiness. |
| Databáze: | OpenAIRE |
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