0183 Both Positive and Negative Affect Are Impacted by Sleep Deprivation

Sleep fragmentation, sleep deprivation, or both.

I applaud the efforts of Schwartz and Moxley to explore ways to achieve greater understanding of the role of arousals in producing daytime impairment.1 This area of research has great clinical relevance, but has been largely neglected in recent years. Schwartz and Moxley distinguish short arousals (3-15 secs) from long arousals (15-60 secs) and wake events (>60 secs). They found that long arous...

Positive Affect, Negative Affect, and Social Interaction

Two studies explored the relations of positive and negative affect (PA and NA) to social interaction. In Study 1, unacquainted dyads were surreptitiously videotaped as they participated in a 6-min interaction. Participants then evaluated the quality of the interaction. Independent observers also rated the videotaped interactions. Trait PA was positively related to both participant and observer ...

Dissociation of cortical regions modulated by both working memory load and sleep deprivation and by sleep deprivation alone.

Working memory is an important mental capacity that is compromised following sleep deprivation (SD). To understand how working memory load interacts with state to influence brain activation in load-sensitive regions, and the extent to which SD-related changes are common across different loads, we used fMRI to study twelve healthy subjects following 24 h of SD using a verbal n-back task with thr...

Relationship between positive and negative affect 1 On the relationship between positive and negative affect: Their..

Relationship Between Positive and Negative Affect and Depression: The Mediating Role of Rumination

Objective: The purpose of this study was to examine the relationship between positive affect, negative affect, rumination and depression, and to explore the mediating role of rumination between positive and negative affect and depression.  Methods: A cross-sectional study was conducted involving 249 students, selected by convenience sampling method. All the participants completed positive...