Flight nurses are go.
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Aerospace Medicine↗
Biomedical subjects
Suzanne Hood
Publications and source records attributed to Suzanne Hood.
Reward and aversive stimuli produce similar nonphotic phase shifts.
Circadian rhythms in rodents respond to arousing, nonphotic stimuli that contribute to daily patterns of entrainment. To examine whether the motivational significance of a stimulus is important for eliciting nonphotic circadian phase shirts in Syrian hamsters (Mesocricetus auratus), the authors compared responses to a highly rewarding stimulus (lateral hypothalamic brain stimulation reward [BSR]) and a highly aversive stimulus (footshock). Animals were housed on a 14:10-hr light-dark cycle until test day, when they were given a 1-hr BSR session (trained animals) or a 1-mA electric footshock at 1 of 8 circadian times, and were maintained in constant dark thereafter. Both BSR pulses and footshock produced nonphotic phase response curves. These results support the hypothesis that arousal resulting from the motivational significance of a stimulus is a major factor in nonphotic phase shifts.
Animals↗
Interference control in a new rule use task: age-related changes, labeling, and attention.
Three experiments examined 3- to 6-year-olds' interference control using a task in which children saw 2 corresponding sets of colored cards, a large set in front of them and a small set behind them. A colored candy (Smartie) was placed on a large card with mismatching color, and children could win the Smartie by selecting the small card that matched the color of the large card. Three-year-olds performed poorly whereas older children performed well. Having children label the correct color before responding improved 3-year-olds' performance (Experiment 2), as did pointing to the large card (Experiment 3); decreasing the affective salience of the stimuli (colored beads vs. Smarties) did not (Experiment 3). Results reveal the role of selective attention in action control.
Attention↗