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ERIC Number: EJ1150344
Record Type: Journal
Publication Date: 2017-Aug
Pages: 11
Abstractor: As Provided
ISSN: ISSN-1072-0502
Acute Exercise Enhances the Consolidation of Fear Extinction Memory and Reduces Conditioned Fear Relapse in a Sex-Dependent Manner
Bouchet, Courtney A.; Lloyd, Brian A.; Loetz, Esteban C.; Farmer, Caroline E.; Ostrovskyy, Mykola; Haddad, Natalie; Foright, Rebecca M.; Greenwood, Benjamin N.
Learning & Memory, v24 n8 p358-368 Aug 2017
Fear extinction-based exposure therapy is the most common behavioral therapy for anxiety and trauma-related disorders, but fear extinction memories are labile and fear tends to return even after successful extinction. The relapse of fear contributes to the poor long-term efficacy of exposure therapy. A single session of voluntary exercise can enhance the acquisition and consolidation of fear extinction in male rats, but the effects of exercise on relapse of fear after extinction are not well understood. Here, we characterized the effects of 2 h of voluntary exercise during the consolidation phase of contextual or auditory fear extinction learning on long-term fear extinction memory and renewal in adult, male and female, Long-Evans rats. Results indicate that exercise enhances consolidation of fear extinction memory and reduces fear relapse after extinction in a sex-dependent manner. These data suggest that brief bouts of exercise could be used as an augmentation strategy for exposure therapy, even in previously sedentary subjects. Fear memories of discrete cues, rather than of contextual ones, may be most susceptible to exercise-augmented extinction, especially in males. Additionally, exercise seems to have the biggest impact on fear relapse phenomena, even if fear extinction memories themselves are only minimally enhanced.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A