Matteo Pardini1, Jordan Grafman2, Vanessa Raymont3,4, Mario Amore1, Gianluca Serafini1, Michael Koenigs5, Frank Krueger6. 1. Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa. 2. Ospedale Policlinico S. Martino-IRCCS, Genova. 3. Department of Psychiatry, University of Oxford, Oxford, United Kingdom. 4. Centre for Dementia Prevention, University of Edinburgh, United Kingdom. 5. Department of Psychiatry, University of Wisconsin-Madison, Madison, WI, USA. 6. School of Systems Biology, George Mason University, Fairfax, VA, USA.
Abstract
OBJECTIVES: The objective of this study is to evaluate the relationship between suicidal ideation (SI), structural brain damage, and cognitive deficits in patients with penetrating traumatic brain injury (pTBI). METHODS: Vietnam War veterans (n = 142) with pTBI to the prefrontal cortex (PFC) underwent combination of neuropsychological and psychiatric examinations and non-contrast CT brain scan. Patients were divided into SI positive (SI+) and SI negative (SI-) groups according to the SI item of the Beck Depression Inventory. RESULTS: Lesions to the left rostrolateral PFC (rlPFC) were associated with a lower risk of SI independent of depression and global functioning. Left rlPFC lesion also reduced abstract reasoning skills, which mediated the lesion effects on suicide ideation. CONCLUSIONS: The left rlPFC plays a crucial role in SI independently of depression and global functioning.
OBJECTIVES: The objective of this study is to evaluate the relationship between suicidal ideation (SI), structural brain damage, and cognitive deficits in patients with penetrating traumatic brain injury (pTBI). METHODS: Vietnam War veterans (n = 142) with pTBI to the prefrontal cortex (PFC) underwent combination of neuropsychological and psychiatric examinations and non-contrast CT brain scan. Patients were divided into SI positive (SI+) and SI negative (SI-) groups according to the SI item of the Beck Depression Inventory. RESULTS: Lesions to the left rostrolateral PFC (rlPFC) were associated with a lower risk of SI independent of depression and global functioning. Left rlPFC lesion also reduced abstract reasoning skills, which mediated the lesion effects on suicide ideation. CONCLUSIONS: The left rlPFC plays a crucial role in SI independently of depression and global functioning.
Authors: Kelly Posner; Gregory K Brown; Barbara Stanley; David A Brent; Kseniya V Yershova; Maria A Oquendo; Glenn W Currier; Glenn A Melvin; Laurence Greenhill; Sa Shen; J John Mann Journal: Am J Psychiatry Date: 2011-12 Impact factor: 18.112
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