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In this paper, the author showed that sleep deprivation shifted people's bias from defending against losses to pursuing gains. This change in economic preferences was correlated with activation in brain regions associated with reward, like ventromedial prefrontal cortex, but not correlated with change in psychomotor vigilance.
But the author failed to make it clear how sleep deprivation causes this shift in econ...
In this paper, the author showed that sleep deprivation shifted people's bias from defending against losses to pursuing gains. This change in economic preferences was correlated with activation in brain regions associated with reward, like ventromedial prefrontal cortex, but not correlated with change in psychomotor vigilance.
But the author failed to make it clear how sleep deprivation causes this shift in economic preference. We suggest that emotion plays a key intermediary role. Traditional views hold that sleep deprivation produces negative, aversive experiences (Daniela et al., 2010; Franzen et al., 2009), but a recent study indicates that sleep loss appears to impose a labile, bidirectional nature of affective imbalance, including increased neural and behavioral reactivity to both positive and negative experiences (Gujar et al., 2011). Emotional processes are considered to have great impact on decision making (Johnson and Tversky, 1983; Schwarz, 2000; Kenneth & Yuen, 2003). So sleep deprivation is likely to influence decision making through the intermediary effects of emotion.
References
Venkatraman V, Huettel SA, Chuah YM, Payne JW, Chee WL (2011) Sleep Deprivation Biases the NeuralMechanisms Underlying Economic Preferences. The Journal of Neuroscience, 31(10): 3712-3718
Daniela T, Alessandro C, Giuseppe C, et al (2010) Lack of sleep affects the evaluation of emotional stimuli. Brain Research Bulletin, 82: 104-108
Franzen PL, Buysse DJ, Dahl RE, Thompson W, Siegle GJ (2009) Sleep de -privation alters pupillary reactivity to emotional stimuli in healthy youngadults. Biol Psychol, 80:300-305.
Gujar N, Yoo S, Hu P, Walker MP (2011) Sleep Deprivation Amplifies Reactivity of Brain Reward Networks, Biasing the Appraisal of Positive EmotionalExperiences. The Journal of Neuroscience, 31(12): 4466-4473
Johnson EJ, Tversky A (1983) Affect, generalization, and the perception of risk. Journal of Personality and Social Psychology, 45: 20- 31
Schwarz N. Emotion, cognition, and decision-making (2000) Cognition and Emotion, 14: 433-440
Kenneth SL, Yuen MC (2003) Could mood state affect risk-taking decisions. Journal of Affective Disorders, 75: 11-18