Time-Dependent Effects of Acute Exercise-Induced Arousal on Long-Term Memory for Emotional and Neutral Stimuli

Psychological research has strongly documented the memory-enhancing effects of emotional arousal, while the effects of acute aerobic exercise on memory are not well understood. Manipulation of arousal has been shown to enhance long-term memory for emotional stimuli in a time-dependent fashion. This presents an opportunity to investigate the role of acute exercise in memory modulation. The purpose of this study was to determine the time-dependent relationship between acute exercise-induced arousal and long-term emotional memory. Participants viewed pleasant, neutral, and unpleasant images before or after completing a high-intensity session of cycling exercise. Salivary alpha-amylase, a biomarker of central norepinephrine, was measured as an indicator of arousal. No effects of exercise on recognition memory were revealed, however; a single session of high-intensity cycling increased salivary alpha-amylase. Our results also indicate that the influence of exercise on emotional responsiveness should be considered in further exploration of the memory-enhancing potential of acute exercise.

Egyptian Pagans through Christian Eyes

Construction of Christian identity in Egypt proceeded in pace with construction of the Egyptian pagan “Other” between the second and sixth centuries. Apologies, martyrdoms, apocalypses, histories, sermons, hagiographies, and magical texts provide several different vantage points from which to view the Christian construction of the Egyptian pagan “Other”: as the agent of anti-Christian violence, as an intellectual rival, as an object of anti-pagan violence, as an obstacle to salvation, and—perhaps most dangerously—as but another participant in a shared religious experience. The recent work of social scientists on identity, deviance, violence, social/cultural memory, and religiosity provides insight into the strategies by which construction of the “Other” was part of a larger project of fashioning a “proper” Christian religious domain.