Heterogeneity of non-conscious fear perception in posttraumatic stress disorder as a function of physiological arousal: an fMRI study.
While posttraumatic stress disorder (PTSD) is often characterised by an excessive fear response and hyperarousal, research has generally neglected other clinical characteristics including hypoarousal. Findings indicate that concurrent autonomic activity is associated with increased non-conscious processing of fear, highlighting that autonomic responsivity may be an important determinant in the degree of activation within the brainstem-amygdala-MPFC (medial prefrontal cortex) network.
Kemp
Andrew H
AH
School of Psychology, University of Sydney, Sydney, NSW, Australia. info@brain-dynamics.net
Felmingham
Kim L
KL
Falconer
Erin
E
Liddell
Belinda J
BJ
Bryant
Richard A
RA
Williams
Leanne M
LM
D000679:Amygdala / Q000098:blood supply; D001143:Arousal / Q000502:physiology*; D001931:Brain Mapping; D001933:Brain Stem / Q000098:blood supply; D005239:Fear; D005260:Female; D005712:Galvanic Skin Response / Q000502:physiology; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D009434:Neural Pathways / Q000098:blood supply / Q000502:physiology; D009483:Neuropsychological Tests; D010100:Oxygen / Q000097:blood; D010465:Perception / Q000502:physiology*; D010775:Photic Stimulation; D017397:Prefrontal Cortex / Q000098:blood supply; D013313:Stress Disorders, Post-Traumatic / Q000473:pathology / Q000503:physiopathology* / Q000523:psychology*
D010100:Oxygen