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Neurobiological Bases of Individual Differences in Emotional and Stress Responsiveness
High Responders–Low Responders Model
Mohamed Kabbaj, PhD
Arch Neurol. 2004;61:1009-1012.
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INTRODUCTION
Emotion, as defined by psychologists, is a strong and complex feeling state that is consciously perceived, like anger, fear, happiness, or love. Although we do not have direct animal models of emotions, we have the tools to study in animals some of the variables that represent components of these human traits, including emotional responsiveness and stress reactivity.
Our understanding of the neurobiological bases of emotional responsiveness derives from 2 major classes of work. The first class represents studies interested in brain sites and associated molecules that respond to fear and anxiety. The other class explores the brain circuits that regulate physiological responses to stress. These 2 classes of work do not contradict each other. In contrast, they coalesce into a coherent body of information of great importance to understanding emotion.
We believe that animal differences in emotional reactivity involve some of the same neuronal circuitry that is . . . [Full Text of this Article]
LIMBIC-HYPOTHALAMIC-PITUITARY-ADRENAL AXIS
DIFFERING EMOTIONAL REACTIVITY IN RATS
NEUROBIOLOGICAL CORRELATES OF HR-LR PHENOTYPIC DIFFERENCES
CONCLUSIONS
From the Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee.
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