Out of touch? How trauma shapes the experience of social touch - Neural and endocrine pathways.
Neurosci Biobehav Rev
; 159: 105595, 2024 Apr.
Article
in En
| MEDLINE
| ID: mdl-38373642
ABSTRACT
Trauma can shape the way an individual experiences the world and interacts with other people. Touch is a key component of social interactions, but surprisingly little is known about how trauma exposure influences the processing of social touch. In this review, we examine possible neurobiological pathways through which trauma can influence touch processing and lead to touch aversion and avoidance in trauma-exposed individuals. Emerging evidence indicates that trauma may affect sensory touch thresholds by modulating activity in the primary sensory cortex and posterior insula. Disturbances in multisensory integration and oxytocin reactivity combined with diminished reward-related and anxiolytic responses may induce a bias towards negative appraisal of touch contexts. Furthermore, hippocampus deactivation during social touch may reflect a dissociative state. These changes depend not only on the type and severity of the trauma but also on the features of the touch. We hypothesise that disrupted touch processing may impair social interactions and confer elevated risk for future stress-related disorders.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Brain Mapping
/
Touch Perception
Limits:
Humans
Language:
En
Journal:
Neurosci Biobehav Rev
Year:
2024
Document type:
Article
Country of publication: