Dr. Elizabeth Phelps
作者: Phelps / 8718次阅读 时间: 2011年7月29日
来源: New York University 标签: Phelps

Dr. Elizabeth Phelps
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New York University
U,A;j EHd0Department of Psychology
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     My research examines the cognitive neuroscience of emotion,     learning and memory. My primary focus has been to understand how human learning     and memory are changed by emotion and to investigate the neural systems mediating     their interactions. I have approached this topic from a number of different     perspectives, with an aim of achieving a more global understanding of the     complex relations between emotion and memory. As much as possible, I have     tried to let the questions drive the research, not the techniques or traditional     definitions of research areas. I have used a number of techniques (behavioral     studies, physiological measurements, brain-lesion studies, fMRI) and have     worked with a number of collaborators in other domains (social and clinical     psychologists, psychiatrists, neuroscientists, economists, physicists). It     is my belief that having focused questions and a broad approach to answering     these questions has enhanced the overall quality of my research program and     the cross-disciplinary relevance and appeal of my work.心理学空间(g\.o!V0vp pS3Jx

     Research projects in the lab can be characterized around four     topics:

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1)Extending animal models of emotional learning to human     behavior. One technique we have used extensively is classical fear conditioning,     which has been investigated as a model paradigm for emotional learning across     species. Using this paradigm, we have been able to show that similar neural     systems underlie the acquisition and extinction of fear conditioning across     species. In humans, we have shown that social learning of fear (through instruction     and observation) also engages these neural systems. Identifying these mechanisms     in humans helps bridge the gap from animal models to normal human function.     We are currently extending this work in two ways. First, we to starting to     investigate the mechanisms of appetitive or reward processing. Second, we     are exploring how learned emotional responses can be altered through extinction,     emotion regulation and reconsolidation. These basic paradigms can be used     to assess changes that may occur with psychopathology and/or the results of     potential treatments.心理学空间s tOh{H4p5Pet

2)Emotion’s influence in episodic memory. Cognitive     psychology research on emotion and memory has focused primarily on explicit     or episodic memory. These studies have shown that episodic memory is enhanced     with mild arousal. In addition, emotion may alter the characteristics of memory     so that memories for emotional events seem more detailed and vivid, even when     they are not more accurate. In a number of studies we are exploring the neural     systems underlying emotion’s influence on episodic memory accuracy and     the subjective sense of remembering. We have extended these studies to behavioral     and imaging studies of real-life emotional events, specifically memory for     the terrorist attacks of 9/11.心理学空间*^s$LF{

3)The impact of emotion on perception, attention and expression.     The first stage of memory processing is perception and attention. In order     to have a complete understanding of emotion’s influence on learning     and memory, it is important to know how the initial stages of stimulus processing     are influenced by emotion. Given this, we have explored the behavioral and     neural mechanisms underlying emotion’s influence on attention and perception.     In addition, in order to assess emotion, it is important to have a thorough     understanding of the different means emotion can be expressed. We have examined     the differences in the behavioral and neural systems of emotion as it is expressed     through explicit evaluation, psychophysiology, implicit reaction time tasks     and choice behavior.


4)Extending the basic mechanisms of emotional learning     to social behavior, decision making and economics. The ultimate goal     of our research is to determine how an understanding of emotion’s impact     on learning and memory can influence our actions outside of the laboratory.     This has led us to explore how emotion influences decision making (or choice),     as well as social behavior. Along these lines, we have projects examining     the acquisition, expression, and inhibition of social biases, particularly     race bias. We are also exploring emotion’s influence on decision making     paradigms derived from economics, as well as more basic studies examining     classical vs. instrumental conditioning. These studies extend our basic research     on the behavioral and neural systems of emotion, learning and memory into     the exciting new domains of Social Neuroscience and Neuroeconomics.心理学空间g8H@0pJ fn:g3Q

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