Research
Frontal EEG Asymmetry and Depression
Depression is a pervasive and costly source of emotional suffering.
In this project, we are working toward identifying the role of a specific
pattern of electro-encephalographic EEG activity, characterized by
diminished activity in the left prefrontal cortex, in depression.
Given the large and growing body of research associating depression
with a generalized pattern of less left than right resting prefrontal
brain activity, we are asking the questions: Does frontal EEG asymmetry
function as 1) an episode marker that simply characterizes depressed
individuals, 2) a liability marker that characterizes depressed persons
and persons at risk for depression who are not currently
depressed, or 3) both a liability and genetic marker of risk for depression.
In addition to these broad questions, we are investigating the degree
to which such asymmetries are measurable under traditional "resting"
conditions as opposed to experimentally induced emotional challenges
that draw out individual capabilities for emotional responding.
Neural Bases of the Social Regulation of Emotion
Social bonding and soothing behaviors mitigate the destructive
effects of negative environmental events and promote enhanced health
and well being. The likely mechanism underlying these effects is
the social regulation of emotional responding. In this work, we
are exploring the ways in which soothing behaviors (e.g., handholding)
and close interpersonal relationships function to regulate neural
responses to stress and adversity. This work involves the measurement
of brain function via functional magnetic resonance imaging (fMRI)
and electroencephalography (EEG).
Neural Bases of Prepared Fear
Learning
According to the
theory of prepared learning, phobias are developed to a non-random
set of objects, and humans and other primates most readily learn to
fear classes of threats, such as snakes, that were recurrent
throughout evolutionary history. Recently, Dr. Judy DeLoache and
Vanessa Lobue found that infants match the image of a moving snake
with the sound of a fearful voice while matching the image of a
non-snake with a happy voice. Thus, babies find something natural
about the relation between a frightened voice and a snake. In our
lab, Vanessa has begun examining
the neural activity underlying the process by which infants make the
association between a fearful voice and the image of a snake, using
EEG. In the lab, we will be examining EEG asymmetry while infants
view different images of snakes and other animals when paired with
happy or fearful voices.
The Neural Correlates of Learned Helplessness and Perseverative
Coping
When faced with uncontrollable and repeated failures to achieve
goals, individuals can begin to lose motivation for other activities,
begin to feel hopeless and experience an increased likelihood of
making mistakes when coping with problems that are in fact controllable.
In this work, we are investigating the ways in which patterns of
EEG activity over the frontal cortex track this process. We are
also interested in specific patterns of neural activity associated
with perseverative errors.
Eye & I -- A Public Art/Science Collaboration
With London designer
Helen
Storey, I have collaborated on a conceptual art exhibit that
expresses many of my scientific interests and findings in a creative
and accessible way that is available to the general public. The first
installation of this exhibit occurred in May of 2005, and new installations
are in the planning stages. This work has been assisted by the
Royal
Court Theatre and generously funded by the
Arts
Council of England, and
Creative
Partnerships. For more information, see
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