Reduced Hippocampal Activity in Youth with Posttraumatic Stress Symptoms: An fMRI Study

Carrión, Victor G.; Haas, Brian W.; Garrett, Amy; Song, Suzan J.; Reiss, Allan L.

doi:10.1093/jpepsy/jsp112

Cited by 148 publications

(108 citation statements)

References 56 publications

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“…Human brain imaging studies subsequently showed that I‐ELT was associated with altered structural integrity in the limbic system (Aas et al., 2012; Andersen et al., 2008; Bremner et al., 1997; Carrion, Weems, & Reiss, 2007; Corbo et al., 2014; Dannlowski et al., 2012; Driessen et al., 2004; Lupien et al., 2011; Tottenham et al., 2010; Veer et al., 2015). Functional imaging studies have further shown that, when processing emotional stimuli (e.g., angry faces), I‐ELT was associated with increased activity in the amygdala (Bremner et al., 2005; Grant, Cannistraci, Hollon, Gore, & Shelton, 2011; Maheu et al., 2010), and with decreased activity of the hippocampus (Bremner et al., 1999; Bremner et al., 2003; Carrion, Haas, Garrett, Song, & Reiss, 2010) and anterior cingulate cortex (Bremner, Vythilingam, Vermetten, Southwick, McGlashan, Nazeer, et al., 2003; Bremner, et al., 2003; Bremner et al., 2004; Mueller et al., 2010). However, these studies have been limited by the consistent use of emotional stimuli, preventing assessments of whether I‐ELT‐related limbic dysfunction potentially impacts more general aspects of cognition.…”

Section: Introductionmentioning

confidence: 99%

Interpersonal early‐life trauma alters amygdala connectivity and sustained attention performance

et al. 2017

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IntroductionInterpersonal early life trauma (I‐ELT) is associated with a myriad of functional impairments in adulthood, increased risk of drug addiction, and neuropsychiatric disorders. While deficits in emotional regulation and amygdala functioning are well characterized, deficits in general cognitive functioning have also been documented. However, the neural underpinnings of cognitive dysfunction in adults with a history of I‐ELT and the potential relationship between amygdala‐based functional connectivity and behavioral performance are currently poorly understood. This study examined how I‐ELT affects the cognitive and neural mechanisms supporting sustained attention.MethodsA total of 66 Veterans (18 with and 48 without a history of I‐ELT) completed a nonemotional sustained attention task during functional MRI.ResultsThe individuals with I‐ELT showed significant impairments in sustained attention (i.e., higher error rates, greater response variability). This cohort exhibited increased amygdala functional connectivity with the prefrontal cortex and decreased functional connectivity with the parahippocampal gyrus when compared to those without I‐ELT. These connections were significantly correlated with individual differences in sustained attention performance. Notably, classification analyses revealed that the pattern of amygdala connectivity across the whole brain was able to classify I‐ELT status with 70% accuracy.ConclusionThese results provide evidence of a lasting negative impact for those with a history of I‐ELT on sustained attention ability. They also highlight a critical role for amygdala functioning in cognitive control and sustained attention for those with a history of I‐ELT, which may underlie the observed attention deficits in clinical assessments and cognitive tests involving both emotional and nonemotional stimuli.

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Section: Introductionmentioning

confidence: 99%

Interpersonal early‐life trauma alters amygdala connectivity and sustained attention performance

et al. 2017

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“…These findings contrast with those of a second recent study that solely examined the encoding period and identified hippocampal irregularities during an associative memory task in a small group of patients. 3 Broadly surveying functional imaging studies in the psychiatric literature, only recently has hippocampal function been examined using functional magnetic resonance imaging (fMRI) in patients with disorders such as posttraumatic stress disorder (PTSD) [4][5][6] or anxiety. 7 Even in patients with schizophrenia, in whom there are clear disruptions of functional networks involving the temporal lobes, hippocampal function has been explored in only a handful of studies.…”

Section: Introductionmentioning

confidence: 99%

Abnormal hippocampal activation in patients with extensive history of major depression: an fMRI study

Milne

MacQueen

Hall

2012

jpn

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“…Maltreated children show increased amygdala and hippocampus activation in response to threatening faces (15)(16)(17)(18), reduced hippocampus activation in a declarative memory task (19), and variable findings regarding PFC activation (12). These brain areas do not act in isolation but interact to regulate the fear response.…”

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confidence: 99%

Childhood maltreatment is associated with altered fear circuitry and increased internalizing symptoms by late adolescence

Herringa

Birn

Ruttle

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

364

314

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Maltreatment during childhood is a major risk factor for anxiety and depression, which are major public health problems. However, the underlying brain mechanism linking maltreatment and internalizing disorders remains poorly understood. Maltreatment may alter the activation of fear circuitry, but little is known about its impact on the connectivity of this circuitry in adolescence and whether such brain changes actually lead to internalizing symptoms. We examined the associations between experiences of maltreatment during childhood, resting-state functional brain connectivity (rs-FC) of the amygdala and hippocampus, and internalizing symptoms in 64 adolescents participating in a longitudinal community study. Childhood experiences of maltreatment were associated with lower hippocampus-subgenual cingulate rs-FC in both adolescent females and males and lower amygdalasubgenual cingulate rs-FC in females only. Furthermore, rs-FC mediated the association of maltreatment during childhood with adolescent internalizing symptoms. Thus, maltreatment in childhood, even at the lower severity levels found in a community sample, may alter the regulatory capacity of the brain's fear circuit, leading to increased internalizing symptoms by late adolescence. These findings highlight the importance of fronto-hippocampal connectivity for both sexes in internalizing symptoms following maltreatment in childhood. Furthermore, the impact of maltreatment during childhood on both fronto-amygdala and -hippocampal connectivity in females may help explain their higher risk for internalizing disorders such as anxiety and depression.child maltreatment | sex differences | ventromedial prefrontal cortex I n both clinical and community samples, maltreatment during childhood represents one of the strongest risk factors for developing depression and anxiety (1-3). Childhood maltreatment and other adversities account for up to a third of the risk for mood and anxiety disorders (4). Further, depression and anxiety disorders are major public health problems, affecting 15 and 32% of youth, respectively, by the age of 18 y (5). The burden of these disorders is significant, representing the second and fifth leading causes, respectively, of years lived with disability in the United States (6). Some evidence suggests that maltreatment may impart greater risk for the development of internalizing symptoms in females than in males (e.g., refs. 7-9). This differential risk could account, in part, for the higher incidence of internalizing problems in females than in males (10, 11). However, the neurobiological pathways from maltreatment during childhood to the expression of internalizing problems, including potential differences for females and males, remain poorly understood. Such information is crucial for improving the treatment of depression and anxiety disorders and for mitigating the effects of maltreatment during childhood.Both maltreatment during childhood (12) and internalizing disorders (13, 14) have been associated with altered activity in specific b...

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Reduced Hippocampal Activity in Youth with Posttraumatic Stress Symptoms: An fMRI Study

Cited by 148 publications

References 56 publications

Interpersonal early‐life trauma alters amygdala connectivity and sustained attention performance

Interpersonal early‐life trauma alters amygdala connectivity and sustained attention performance

Abnormal hippocampal activation in patients with extensive history of major depression: an fMRI study

Childhood maltreatment is associated with altered fear circuitry and increased internalizing symptoms by late adolescence

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