Traumatic stress alters neural reactivity to visual stimulation DOI Creative Commons
Nathaniel G. Harnett,

Grace E. Rowland,

E. Kate Webb

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Traumatic stress is a precursor to the development of posttraumatic disorder (PTSD). Emergent research suggests visual processing regions may be relevant PTSD development; however, no previous date has investigated potential effects trauma exposure on neural reactivity non-affective stimulation. In present study, 24 recently trauma-exposed (TE) and 16 without recent (NTE) individuals completed functional magnetic resonance imaging during alternating blocks flickering checkerboard presentations rest with an attentional check. TE participants were recruited within 2-4 weeks trauma, symptoms assessed both at time scan 6 months following exposure. showed greater deactivation cortex compared NTE participants. Further, dorsomedial prefrontal stimulation rest, while difference was observed in Connectivity analyses also revealed that paracentral gyrus connectivity but only for Finally, negatively associated group. Our findings suggest acute alterations function underlies basic processing. Furthermore, trauma-induced variability circuit related expression symptoms.

Language: Английский

Traumatic stress alters neural reactivity to visual stimulation DOI Creative Commons
Nathaniel G. Harnett,

Grace E. Rowland,

E. Kate Webb

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Traumatic stress is a precursor to the development of posttraumatic disorder (PTSD). Emergent research suggests visual processing regions may be relevant PTSD development; however, no previous date has investigated potential effects trauma exposure on neural reactivity non-affective stimulation. In present study, 24 recently trauma-exposed (TE) and 16 without recent (NTE) individuals completed functional magnetic resonance imaging during alternating blocks flickering checkerboard presentations rest with an attentional check. TE participants were recruited within 2-4 weeks trauma, symptoms assessed both at time scan 6 months following exposure. showed greater deactivation cortex compared NTE participants. Further, dorsomedial prefrontal stimulation rest, while difference was observed in Connectivity analyses also revealed that paracentral gyrus connectivity but only for Finally, negatively associated group. Our findings suggest acute alterations function underlies basic processing. Furthermore, trauma-induced variability circuit related expression symptoms.

Language: Английский

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