TY - JOUR
PY - 2019//
TI - Functional imaging of the implicit association of the self with life and death
JO - Suicide and life-threatening behavior
A1 - Ballard, Elizabeth D.
A1 - Reed, Jessica L.
A1 - Szczepanik, Joanna
A1 - Evans, Jennifer W.
A1 - Yarrington, Julia S.
A1 - Dickstein, Daniel P.
A1 - Nock, Matthew K.
A1 - Nugent, Allison C.
A1 - Zarate, Carlos A.
SP - ePub
EP - ePub
VL - ePub
IS - ePub
N2 - OBJECTIVE: A critical need exists to identify objective markers of suicide ideation. One potential suicide risk marker is the Suicide Implicit Association Task (S-IAT), a behavioral task that uses differential reaction times to compare the implicit association between the self and death to the implicit association between the self and life. Individuals with a stronger association between the self and death on the S-IAT are more likely to attempt suicide in the future. To better understand the neural underpinnings of the implicit association between self and either life or death, a functional magnetic resonance imaging (fMRI) version of the S-IAT was adapted and piloted in healthy volunteers.
METHOD: An fMRI version of the S-IAT was administered to 28 healthy volunteers (ages 18-65, 14F/14M).
RESULTS: Behavioral results were comparable to those seen in non-scanner versions of the task. The task was associated with patterns of neural activation in areas relevant to emotional processing, specifically the insula and right ventrolateral prefrontal cortex.
CONCLUSIONS: Performance on the S-IAT fMRI task may reflect scores obtained outside of the scanner. In future evaluations, this task could help assess whether individuals at increased risk of suicide display a different pattern of neural activation in response to self/death and self/life stimuli.
© 2019 The American Association of Suicidology.
Language: en
LA - en SN - 0363-0234 UR - http://dx.doi.org/10.1111/sltb.12543 ID - ref1 ER -