Representation of attitudinal knowledge: role of prefrontal cortex, amygdala and parahippocampal gyrus
| Autor: | Kristine M. Knutson, Jordan Grafman, Jacqueline N. Wood, Stephen G. Romero |
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| Rok vydání: | 2005 |
| Předmět: |
Adult
Male Cognitive Neuroscience Emotions Prefrontal Cortex Experimental and Cognitive Psychology Stimulus (physiology) Amygdala Functional Laterality Behavioral Neuroscience Basal ganglia medicine Image Processing Computer-Assisted Humans Prefrontal cortex Magnetic Resonance Imaging Emotional lateralization medicine.anatomical_structure Knowledge Attitude Social Perception Parahippocampal Gyrus Orbitofrontal cortex Female Nerve Net Consumer neuroscience Psychology Neuroscience Parahippocampal gyrus Cognitive psychology |
| Zdroj: | Neuropsychologia. 43(2) |
| ISSN: | 0028-3932 |
| Popis: | It has been proposed that behavior is influenced by representations of different types of knowledge: action representations, event knowledge, attitudes and stereotypes. Attitudes (representations of a concept or object and its emotional evaluation) allow us to respond quickly to a given stimulus. In this study, we explored the representation and inhibition of attitudes. We show that right dorsolateral prefrontal cortex mediates negative attitudes whereas left ventrolateral prefrontal cortex mediates positive attitudes. Parahippocampal regions and amygdala mediate evaluative processing. Furthermore, anxiety modulates right dorsolateral prefrontal activation during negative attitude processing. Inhibition of negative attitudes activates left orbitofrontal cortex: a region that when damaged is associated with socially inappropriate behavior in patients. Inhibition of positive attitudes activates a brain system involving right inferior frontal gyrus and bilateral anterior cingulate. Thus, we show that there are dissociable networks for the representation and inhibition of attitudes. |
| Databáze: | OpenAIRE |
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