The highly sensitive brain: an fMRI study of sensory processing sensitivity and response to others' emotions
Version of Record online: 23 JUN 2014
© 2014 The Authors. Brain and Behavior published by Wiley Periodicals, Inc.
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Brain and Behavior
Volume 4, Issue 4, pages 580–594, July 2014
How to Cite
Acevedo, B. P., Aron, E. N., Aron, A., Sangster, M.-D., Collins, N. and Brown, L. L. (2014), The highly sensitive brain: an fMRI study of sensory processing sensitivity and response to others' emotions. Brain and Behavior, 4: 580–594. doi: 10.1002/brb3.242
- Issue online: 16 JUL 2014
- Version of Record online: 23 JUN 2014
- Manuscript Accepted: 30 APR 2014
- Manuscript Revised: 30 MAR 2014
- Manuscript Received: 1 OCT 2013
- National Science Foundation. Grant Number: 0958171
- University of California at Santa Barbara's Brain Imaging Center
- highly sensitive person;
- magnetic resonance imaging;
- mirror neurons;
- sensory processing sensitivity
Theory and research suggest that sensory processing sensitivity (SPS), found in roughly 20% of humans and over 100 other species, is a trait associated with greater sensitivity and responsiveness to the environment and to social stimuli. Self-report studies have shown that high-SPS individuals are strongly affected by others' moods, but no previous study has examined neural systems engaged in response to others' emotions.
This study examined the neural correlates of SPS (measured by the standard short-form Highly Sensitive Person [HSP] scale) among 18 participants (10 females) while viewing photos of their romantic partners and of strangers displaying positive, negative, or neutral facial expressions. One year apart, 13 of the 18 participants were scanned twice.
Across all conditions, HSP scores were associated with increased brain activation of regions involved in attention and action planning (in the cingulate and premotor area [PMA]). For happy and sad photo conditions, SPS was associated with activation of brain regions involved in awareness, integration of sensory information, empathy, and action planning (e.g., cingulate, insula, inferior frontal gyrus [IFG], middle temporal gyrus [MTG], and PMA).
As predicted, for partner images and for happy facial photos, HSP scores were associated with stronger activation of brain regions involved in awareness, empathy, and self-other processing. These results provide evidence that awareness and responsiveness are fundamental features of SPS, and show how the brain may mediate these traits.