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Full-Text Articles in Experimental Analysis of Behavior
Comparison Between The Effects Of Acute Physical And Psychosocial Stress On Feedback-Based Learning, Xiao Yang, Brittany Nackley, Bruce H. Friedman
Comparison Between The Effects Of Acute Physical And Psychosocial Stress On Feedback-Based Learning, Xiao Yang, Brittany Nackley, Bruce H. Friedman
Psychology Faculty Publications
Stress modulates feedback-based learning, a process that has been implicated in declining mental function in aging and mental disorders. While acute physical and psychosocial stressors have been used interchangeably in studies on feedback-based learning, the two types of stressors involve distinct physiological and psychological processes. Whether the two types of stressors differentially influence feedback processing remains unclear. The present study compared the effects of physical and psychosocial stressors on feedback-based learning. Ninety-six subjects (Mage = 19.11 years; 50 female) completed either a cold pressor task (CPT) or mental arithmetic task (MAT), as the physical or psychosocial stressor, while electrocardiography and …
Aged Rats: Sex Differences And Responses To Chronic Stress, Rachel E. Bowman, Neil J. Maclusky, Samantha Diaz-Weinstein, Mark C. Zrull, Victoria N. Luine
Aged Rats: Sex Differences And Responses To Chronic Stress, Rachel E. Bowman, Neil J. Maclusky, Samantha Diaz-Weinstein, Mark C. Zrull, Victoria N. Luine
Psychology Faculty Publications
Cognitive, as well as physiological, sex differences exist in young adult rats under both basal conditions and following chronic stress; however, few studies have examined whether sex differences remain in aged subjects and whether responses to stress are altered. We compared aged male and female Fischer 344 rats (21.5 months at testing) without stress and when given 21 days of restraint for 6 h/day on locomotion, anxiety-related behaviors, object recognition (non-spatial memory), object placement (spatial memory), body weight and serum steroid hormone levels. Control (unstressed) females had lower levels of estradiol and testosterone and higher corticosterone than males, and stress …
Chronic Restraint Stress Enhances Radial Arm Maze Performance In Female Rats, Rachel E. Bowman, Mark C. Zrull, Victoria N. Luine
Chronic Restraint Stress Enhances Radial Arm Maze Performance In Female Rats, Rachel E. Bowman, Mark C. Zrull, Victoria N. Luine
Psychology Faculty Publications
Effects of chronic restraint stress (21 and 28 days) on physiological and behavioral parameters in female rats were examined. Total (bound and free) and free corticosterone (CORT) levels were measured at different time points during the stress period. Higher total CORT levels were observed in stressed rats during the stress period but returned to baseline at 15 days poststress. Additionally, free CORT levels decreased across the stress period. Estrous cyclicity was monitored daily in all animals. Stress had no apparent effects on estrous cyclicity, in rats with either normal length or elongated estrous cycles, but stressed females gained less weight …