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Self-regulation of Prefrontal Cortex during Emotional Cognitive Control

Self-regulation of Prefrontal Cortex during Emotional Cognitive Control
情绪认知控制过程中前额叶皮层的自我调节
批准号:
10376765
负责人:
Timothy McDermott
金额:
$1.12万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
2020
资助国家:
美国
项目状态:
已结题
起止时间:
2020-04-01 至 2022-07-31

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中文摘要
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英文摘要
PROJECT SUMMARY/ABSTRACT Deficits in emotional cognitive control are present in a number of clinical psychiatric populations including depression, anxiety, and PTSD. Deficits in this domain of function limit one's ability to focus attention on goal- directed activities while inhibiting reactions to irrelevant emotional stimuli, and this contributes to the symptoms of these disorders and makes individuals less likely to be successful in existing treatments. The left dorsolateral prefrontal cortex (LDLPFC) and its connectivity with other regions (i.e., dorsal anterior cingulate cortex, ventromedial prefrontal cortex, insula, amygdala) is thought to play a central role in facilitating emotional cognitive control. However, past research has primarily utilized correlational approaches that limit conclusions about the directionality of these relationships. Enhancing our understanding of the neural underpinnings of emotional cognitive control could be valuable for informing treatment for populations with deficits in these processes. The current study utilizes a neuromodulatory approach called real-time functional magnetic resonance imaging neurofeedback (rtfMRI-nf) whereby participants observe their own neural activity in the moment and are taught to self-regulate this activity. Healthy adult participants will be trained to increase neural activity in LDLPFC while involved in mental tasks involving emotional cognitive control processes. The mental tasks will include counting, remembering words, or planning events while viewing negatively-valenced emotional words (e.g., kill, death, threat). This study will use an experimental approach with participants being randomized to either LDLPFC rtfMRI-nf or control rtfMRI-nf where participants receive neural feedback from a region not involved with emotional cognitive control processes. Resting-state fMRI scans and behavioral testing sessions will take place before and after rtfMRI-nf. The specific aims are to examine the impact of LDLPFC rtfMRI-nf on: (1) LDLPFC activity during emotional cognitive control and (2) LDLPFC functional connectivity with other brain regions during rest. Additionally, this study will examine the neural correlates of emotional cognitive control independent of rtfMRI-nf. Thus, the final specific aim is to (3) Investigate relationships between individual differences in LDLPFC engagement, cognitive control performance, trauma history, and sleep quality. To facilitate the relevance of these findings to clinical populations, trauma exposure and sleep quality will be explored as moderators of neural change across time for those in the rtfMRI-nf group. To these ends, this study will use rtfMRI-nf to experimentally investigate the relationship between LDLPFC activity and emotional cognitive control as well as investigate these neural mechanisms independent of rtfMRI-nf. This research will improve our understanding of emotional cognitive control and demonstrate whether this is a modifiable target for intervention in populations with deficits in this domain of function. Future studies by the applicant could utilize LDLPFC rtfMRI- nf or other neuromodulatory approaches to modify neural activity and behavior in clinical populations, which could potentially lead to improved outcomes either as standalone or adjunctive treatment.
期刊论文(1)
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会议论文
Neurophysiological mechanisms of anhedonia and cognitive control deficits in trauma-exposed people completing vibroacoustically augmented breath focused mindfulness
  • 批准号:
    10752342
  • 项目类别:
  • 资助金额:
    $6.87万
  • 财政年份:
    2023
  • 负责人:
    Timothy McDermott
  • 依托单位:
Mechanisms of arsenic detoxification by the human microbiome
Mechanisms of arsenic detoxification by the human microbiome
Mechanisms of arsenic detoxification by the human microbiome
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