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Title page for ETD etd-03232014-091238


Type of Document Dissertation
Author McHugo, Maureen Kelly
URN etd-03232014-091238
Title Neuroimaging of the Emotional Attentional Blink
Degree PhD
Department Neuroscience
Advisory Committee
Advisor Name Title
Jennifer Blackford, Ph.D. Committee Chair
Bunmi O. Olatunji, Ph.D. Committee Member
David H. Zald, Ph.D. Committee Member
Rene Marois Committee Member
Keywords
  • emotion
  • atttention
  • fmri
Date of Defense 2014-03-10
Availability unrestricted
Abstract
The emotional attentional blink (EAB), also known as emotion-induced blindness, refers to a phenomenon in which the brief appearance of a task-irrelevant, emotionally arousing image captures attention to such an extent that individuals cannot detect target stimuli for several hundred ms after the emotional stimulus. This dissertation shows that the EAB depends upon activation of a neural circuit involving the amygdala, dorsomedial prefrontal cortex, middle frontal gyri and left inferior parietal lobule. The EAB may involve interactions with regions in the default mode and frontoparietal control networks. The importance of understanding the EAB is highlighted by recent evidence indicating that EAB tasks can detect altered sensitivity to disorder relevant stimuli in psychiatric conditions such as post-traumatic stress disorder.
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