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Dopamine D1 Binding Potential Predicts Fusiform BOLD Activity during Face-Recognition Performance
Stockholm University, Faculty of Social Sciences, Department of Psychology.
Stockholm University, Faculty of Social Sciences, Aging Research Center (ARC), (together with KI).
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2015 (English)In: Journal of Neuroscience, ISSN 0270-6474, E-ISSN 1529-2401, Vol. 35, no 44, 14702-14707 p.Article in journal (Refereed) Published
Abstract [en]

The importance of face memory in humans and primates is well established, but little is known about the neurotransmitter systems involved in face recognition. We tested the hypothesis that face recognition is linked to dopamine (DA) activity in fusiform gyrus (FFG). DA availability was assessed by measuring D1 binding potential (BP) during rest using PET. We further assessed blood-oxygen-level-dependent (BOLD) signal change while subjects performed a face-recognition task during fMRI scanning. There was a strong association between D1 BP and BOLD activity in FFG, whereasD1BPin striatal and other extrastriatal regions were unrelated to neural activity in FFG. These results suggest that D1 BP locally modulates FFG function during face recognition. Observed relationships among D1 BP, BOLD activity, and face-recognition performance further suggest that D1 receptors place constraints on the responsiveness of FFG neurons.

Place, publisher, year, edition, pages
2015. Vol. 35, no 44, 14702-14707 p.
Keyword [en]
dopamine, face recognition, FMRI, fusiform gyrus, multimodal imaging, PET
National Category
Psychology Neurosciences
Research subject
URN: urn:nbn:se:su:diva-123215DOI: 10.1523/JNEUROSCI.1298-15.2015ISI: 000366053900003OAI: diva2:872244
Available from: 2015-11-18 Created: 2015-11-18 Last updated: 2016-01-04Bibliographically approved

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Fischer, Håkan
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Department of PsychologyAging Research Center (ARC), (together with KI)
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