Attention training improves aberrant neural dynamics during working memory processing in veterans with PTSD

Posttraumatic stress disorder (PTSD) is associated with executive functioning deficits, including disruptions in working memory (WM). Recent studies suggest that attention training reduces PTSD symptomatology, but the underlying neural mechanisms are unknown. We used high-density magnetoencephalography (MEG) to evaluate whether attention training modulates brain regions serving WM processing in PTSD. Fourteen veterans with PTSD completed a WM task during a 306-sensor MEG recording before and after 8 sessions of attention training treatment. A matched comparison sample of 12 combat-exposed veterans without PTSD completed the same WM task during a single MEG session. To identify the spatiotemporal dynamics, each group’s data were transformed into the time-frequency domain, and significant oscillatory brain responses were imaged using a beamforming approach. All participants exhibited activity in left hemispheric language areas consistent with a verbal WM task. Additionally, veterans with PTSD and combat-exposed healthy controls each exhibited oscillatory responses in right hemispheric homologue regions (e.g., right Broca’s area); however, these responses were in opposite directions. Group differences in oscillatory activity emerged in the theta band (4–8 Hz) during encoding and in the alpha band (9–12 Hz) during maintenance and were significant in right prefrontal and right supramarginal and inferior parietal regions. Importantly, following attention training, these significant group differences were reduced or eliminated. This study provides initial evidence that attention training improves aberrant neural activity in brain networks serving WM processing.     

Flow state in self-paced and externally-paced performance contexts: An examination of the flow model

ObjectivesKimiecik and Stein's (1992) flow model proposed that personal and situational factors affect the experience of flow. Singer, 1988, Singer, 2000 argued that different mental processes underlie self-initiated and reactive performances. The first purpose of this study was to examine main and interaction effects between imagery use and confidence on flow state in different performance contexts. The second purpose was to assess main and interaction effects between flow state, imagery, and confidence on self-paced service and externally-paced groundstroke performance in tennis.DesignThis field study used a repeated-measures design.MethodA pilot study was conducted to inform the set up of the two performance contexts. Flow states were assessed on two separate occasions, (a) for the service performance, and (b) for the groundstroke performance. A total of 60 junior tennis athletes completed imagery and confidence measures before the field test.ResultsA significant interaction between imagery and confidence was found for flow state in the groundstroke but not in the service task. No significant interaction effects were found for performance outcome. Flow state significantly predicted groundstroke performance, and imagery and confidence predicted service performance.ConclusionsThe examination of flow in different performance contexts is challenging. Imagery and confidence are central to the experience of flow. Flow state appeared to be more important for the externally-paced than self-paced task. The relationship between flow and performance is complex, which requires the conceptual expansion of Kimiecik and Stein's (1992) flow model.     

A Critique of Information Ethics

Luciano Floridi presents Information Ethics (IE) as an alternative to traditional moral theories. IE consists of two tenets. First, reality can be interpreted at numerous, mutually consistent levels of abstraction, the highest of which is information. This level, unlike the others, applies to all of reality. Second, everything, insofar as it is an information object, has some degree of intrinsic value and hence moral dignity. I criticize IE, arguing that Floridi fails to show that the moral community should be expanded beyond beings capable of suffering or having preferences. Next, I look at Floridi’s extended case against consequentialism generally and utilitarianism in particular. I try to show that his criticisms are flawed. Third, I argue that, for the most part, it is not clear what IE’s practical implications are. I conclude with a critical discussion of the one area of information ethics, traditionally conceived, that Floridi has written about at length, privacy.     

Do the magnocellular and parvocellular visual pathways contribute differentially to subitizing and counting?

We investigated the neurobiologies! basis of visual processes involved in object enumeration. Subitizing, the ability to rapidly and accurately enumerate four or fewer objects, is thought to depend on preattentive processing of visual stimuli, whereas counting of more numerous objects is thought to require serial shifts of attention. We attempted to distinguish between the hypothesis that the magnocellular (M) visual pathway is the preferential route for subitizing, and the alternative hypothesis that there is no selectivity for the M pathway or its counterpart, the parvocellular (P) visual pathway, in visual object enumeration. Green rectangles were presented on an equiluminant red background to impair M pathway processing. This slowed enumeration performance relative to a control condition in which object/background luminance differed, especially when the rectangles were relatively large and widely spaced and had constant retinal eccentricity. When low luminance contrast was used to impair processing along the P pathway, enumeration performance was slowed relative to a high-contrast control condition, especially when the rectangles were small and closely spaced. Overall, our manipulations affected enumeration performance without selectivity for subitizing or counting ranges and without altering the slope of the functions relating reaction time to numerosity. Thus, our results favor the hypothesis that visual enumeration does not depend preferentially on either the M or the P pathway.     

All work and no play: A focus on leisure time as a means for promoting health

In a study of 294 participants the relationship between attitude to leisure time and engagement in leisure activities and psychological and physical health was investigated Using questionnaire methods a consistent and significant relationship was found in that individuals with more positive attitudes towards and engagement in leisure activities experienced less general psychological distress, anxiety, depression, and hostility. They also experienced higher levels of positive affect and reported feeling physically healthier. Leisure measures were also related to levels of achievement motivation. The data points to leisure time behaviour as a rich source of information about coping styles and the positive use of leisure counselling as a therapeutic intervention.     

Cognitive appraisal,vulnerability and coping: An integrative analysis of appraisal and coping mechanisms

Research on stress has generally concluded that stress occurs within the person as a result of their cognitive appraisal of experience. However although a number of cognitive theories of emotion exist, an integrative analysis of cognitive appraisal and vulnerability to stress has not been produced. This report contains two studies. Study 1 draws together the major variables identified in the literature in an analysis of their power to differentiate between a clinical sample (n = 48), a self-help group (n = 54), and a control sample (n = 509). The analysis shows that achievement motivation, attributional style, problem-solving style, emotional reactivity; hopelessness, perceived control and perceived social support are significant discriminators. In a second study the relationship between these variables and aspects of life stress, work stress, life satisfaction, depression, anxiety, and positive affect were investigated. Again the data support an explanatory role for these variables. The suggestion is that these variables can be utilized in an integrative model of cognitive appraisal in the stress process to guide intervention.     

Case vignette: child abuse or acceptable cultural norms -- child psychiatrist's response; ethical issues in culturally relevant interventions; cultural contexts

Three families from the nation of the Gambia have become socially acquainted in the greater Metropolis area where they have relocated from their native country. All three families have preadolescent daughters. None of the girls has as yet undergone the ritual "female circumcision" commonly practiced in their native country. Five of the six parents think it would be a good idea to hold such a ritual ceremony in Metropolis next month. The sixth parent is uneasy about the procedure and wonders if it is appropriate anyway. The parent comes to talk with you, a physician or mental health professional, about this. The parent describes concerns about the procedure and the practice in general, but notes that some groups in the United States do "similar things," referring to the ritual circumcision of Jewish boys at 8 days of age. The parent adds that if the procedure is not possible in the United States, it could be done in the Gambia when the family returns there on holiday. Discussants were asked for their opinions regarding advice to the parent's ethical obligations (especially in the case of mandated reporting of suspected child abuse).     

SYMLOG: Clinical technology for therapist family of origin and family system appraisal

SYMLOG, an acronym for Systematic Multiple Level Observation of Groups, reflects a technology for the quantification and graphic organization of subjective observational data. The SYMLOG field diagram-a graphic diagram which reflects relational interactions on three dimensions-provides the opportunity to analyze the admixture of therapist family of origin dynamics in conjunction with family relational behaviors. This article presents a sample SYMLOG clinician family of origin evaluation with accompanying elaboration surrounding SYMLOG field theory.