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Anxiety overrides the blocking effects of high perceptual load on amygdala reactivity to threat-related distractors.
Cornwell, Brian R; Alvarez, Ruben P; Lissek, Shmuel; Kaplan, Raphael; Ernst, Monique; Grillon, Christian.
Afiliación
  • Cornwell BR; Mood and Anxiety Disorders Program, National Institute of Mental Health (NIMH), Bethesda, MD, USA; Mood and Anxiety Disorders Program, National Institutes of Health (NIH), Bethesda, MD, USA. Electronic address: cornwellb@mail.nih.gov.
  • Alvarez RP; Mood and Anxiety Disorders Program, National Institute of Mental Health (NIMH), Bethesda, MD, USA; Mood and Anxiety Disorders Program, National Institutes of Health (NIH), Bethesda, MD, USA.
  • Lissek S; Mood and Anxiety Disorders Program, National Institute of Mental Health (NIMH), Bethesda, MD, USA; Mood and Anxiety Disorders Program, National Institutes of Health (NIH), Bethesda, MD, USA.
  • Kaplan R; Mood and Anxiety Disorders Program, National Institute of Mental Health (NIMH), Bethesda, MD, USA; Mood and Anxiety Disorders Program, National Institutes of Health (NIH), Bethesda, MD, USA.
  • Ernst M; Mood and Anxiety Disorders Program, National Institute of Mental Health (NIMH), Bethesda, MD, USA; Mood and Anxiety Disorders Program, National Institutes of Health (NIH), Bethesda, MD, USA.
  • Grillon C; Mood and Anxiety Disorders Program, National Institute of Mental Health (NIMH), Bethesda, MD, USA; Mood and Anxiety Disorders Program, National Institutes of Health (NIH), Bethesda, MD, USA.
Neuropsychologia ; 49(5): 1363-1368, 2011 Apr.
Article en En | MEDLINE | ID: mdl-21376745
Amygdala reactivity to threat-related distractor stimuli can be abolished in perceptually demanding contexts. Premised on the biological imperative to respond swiftly to threat, we demonstrate, however, that when participants are threatened by shock, greater amygdala responses to fearful compared to neutral distractor faces is preserved under conditions of high attentional demand. Lateral prefrontal cortices also showed selective responding to fearful distractor faces under these conditions, suggesting that threat-related distractor stimuli engaged attentional control mechanisms. We conclude that anxiety elicited by looming threat promotes neurocognitive processes that broaden attention and enhance sensitivity to potential danger cues, even when perceptual systems are taxed.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ansiedad / Miedo / Amígdala del Cerebelo Tipo de estudio: Etiology_studies Límite: Adolescent / Adult / Female / Humans / Male Idioma: En Revista: Neuropsychologia Año: 2011 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ansiedad / Miedo / Amígdala del Cerebelo Tipo de estudio: Etiology_studies Límite: Adolescent / Adult / Female / Humans / Male Idioma: En Revista: Neuropsychologia Año: 2011 Tipo del documento: Article Pais de publicación: Reino Unido