Neural Substrates of Emotion As Revealed by Functional Magnetic Resonance Imaging

Department of Neurology, Medical College of Georgia, Augusta, Georgia 30912-3275, USA.
Cognitive and Behavioral Neurology (Impact Factor: 1.14). 04/2004; 17(1):9-17. DOI: 10.1097/00146965-200403000-00002
Source: PubMed

ABSTRACT To examine the brain circuitry involved in emotional experience and determine whether the cerebral hemispheres are specialized for positive and negative emotional experience.
Recent research has provided a preliminary sketch of the neurologic underpinnings of emotional processing involving specialized contributions of limbic and cortical brain regions. Electrophysiologic, functional imaging, and Wada test data have suggested positive, approach-related emotions are associated with left cerebral hemisphere regions, whereas negative, withdrawal-related emotions appear to be more aligned with right hemisphere mechanisms.
These emotional-neural associations were investigated using functional magnetic resonance imaging in 10 healthy controls with 20 positively and 20 negatively valenced pictures from the International Affective Picture System in a counterbalanced order. Pictures were viewed within a 1.5 Telsa scanner through computerized video goggles.
Emotional pictures resulted in significantly increased blood flow bilaterally in the mesial frontal lobe/anterior cingulate gyrus, dorsolateral frontal lobe, amygdala/anterior temporal regions, and cerebellum. Negative emotional pictures resulted in greater activation of the right hemisphere, and positive pictures caused greater activation of the left hemisphere.
Results are consistent with theories emphasizing the importance of circuitry linking subcortical structures with mesial temporal, anterior cingulate, and frontal lobe regions in emotion and with the valence model of emotion that posits lateralized cerebral specialization for positive and negative emotional experience.

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    • "However, awareness that the cerebellum plays a role in higher cognitive functions is growing. Evidence from anatomical studies in primates (Kelly and Strick 2003; Middleton and Strick 2001) and clinical work in humans (Nashold and Slaughter 1969; Heath et al. 1974; Cooper et al. 1976; Schmahmann 1991; Schmahmann et al. 2009) supports a growing number of imaging studies reporting cerebellar activity that is not linked to motor behavior, such as emotion, attention, and social cognition (Liddle et al. 2001; Schall et al. 2003; Blackwood et al. 2004; Lee et al. 2004; Habel et al. 2005; Bermpohl et al. 2006; Hofer et al. 2007; Van Overwalle et al. 2014). "
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