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JoVE Journal Behavior
Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat
 

Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat

Article DOI: 10.3791/51905-v • 11:18 min • September 12th, 2014
September 12th, 2014 •
*1, *1, 1, 1
1Department of Psychology, University of Wisconsin-Madison
* These authors contributed equally

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Potentiation of the startle reflex is measured via electromyography of the orbicularis oculi muscle during low (uncertain) and high (certain) probability electric shock threat in the Threat Probability Task. This provides an objective measure of distinct negative emotional states (fear/anxiety) for research on psychopathology, substance use/abuse, and broad affective science.

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Threat Probability Task Anxiety Fear Uncertain Threat Certain Threat Startle Reflex Startle Potentiation Electromyography (EMG) Orbicularis Oculi Muscle Acoustic White Noise Startle Probes Visual Threat Cues Mild Electric Shock No-threat Cues Objective Measurement Self-report Negative Affect
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