Emotion perception and executive functioning predict work status in euthymic bipolar disorder

Functional recovery, including return to work, in Bipolar Disorder (BD) lags behind clinical recovery and may be incomplete when acute mood symptoms have subsided. We examined impact of cognition on work status and underemployment in a sample of 156 Euthymic-BD and 143 controls (HC) who were divided into working/not working groups. Clinical, health, social support, and personality data were collected, and eight cognitive factors were derived from a battery of neuropsychological tests. The HC groups outperformed the BD groups on seven of eight cognitive factors. The working-BD group outperformed the not working-BD group on 4 cognitive factors composed of tasks of emotion processing and executive functioning including processing speed and set shifting. Emotion processing and executive tasks were predictive of BD unemployment, after accounting for number of mood episodes. Four cognitive factors accounted for a significant amount of the variance in work status among the BD participants. Results indicate that patients with BD who are unemployed/unable to work exhibit greater difficulties processing emotional information and on executive tasks that comprise a set shifting or interference resolution component as compared to those who are employed, independent of other factors. These cognitive and affective factors are suggested as targets for treatment and/or accommodations.     

Alternative grafts in anterior cervical fusion

Objective

The present retrospective study was conducted to compare the clinical and radiographic outcomes in patients undergoing anterior cervical discectomy with fusion (ACDF) using carbon fiber reinforced polymer (CFRP) cages, or allograft.

Methods

We retrospectively reviewed cases of ACDF using allograft in 20 patients, and CFRP in 19 who had sequential radiographs before and after surgery, and at 1 year.

Results

There were no apparent significant differences between the 2 groups in age (p = 0.057), gender (p = 0.635), or complications (p = 0.648). At 12 months, there were no cases of construct failure, and fusion appeared to have been achieved in patients of both groups. Lordosis was increased significantly in both groups after surgery (p < 0.001 in allograft and p = 0.025 in CFRP), and was maintained up until 1 year (p < 0.018 in allograft and p = 0.05 in CFRP) without a difference between groups (p = 0.721). Anterior interbody height was significantly increased (p < 0.001 in both groups at each time points) after surgery, without a significant difference between groups (p > 0.21). This increase in height was greatest in magnitude immediately after surgery, and declined with the passage of time. There was no detectable health-related quality of life difference between allograft and CFRP group after surgery (p > 0.05).

Conclusion

The present study demonstrates that CFRP cages appear to have comparable fusion rates, restoration of lordosis and disc space height, and complication rates to patients who undergo ACDF with allograft.     

Dopaminergic Function in the Psychosis Spectrum: An [18F]-DOPA Imaging Study in Healthy Individuals With Auditory Hallucinations

Background: The psychosis phenotype appears to exist in the population as a continuum, but it is not clear if subclinical psychotic symptoms and psychotic disorders share the same neurobiology. We investigated whether the dopaminergic dysfunction seen in psychotic disorders is also present in healthy, well-functioning people with hallucinations. Methods: We compared dopamine synthesis capacity (using 6-[¹⁸F]fluoro-L-DOPA [[¹⁸F]-DOPA] positron emission tomography imaging) in 16 healthy individuals with frequent persistent auditory verbal hallucinations (hallucinating group) with that in 16 matched controls. Results: There was no significant difference in dopamine synthesis capacity in the striatum, or its functional subdivisions, between groups and no relationship between subclinical psychotic symptom severity or schizotypal traits and dopamine synthesis capacity in the hallucinating group. Conclusions: Altered dopamine synthesis capacity is unlikely to underlie subclinical hallucinations, suggesting that although there may be a phenomenological psychosis continuum, there are distinctions at the neurobiological level.     

Short‐term environmental enrichment,in the absence of exercise,improves memory,and increases NGF concentration,early neuronal survival,and synaptogenesis in the dentate gyrus in a time‐dependent manner

Environmental manipulations can enhance neuroplasticity in the brain, with enrichment‐induced cognitive improvements being linked to increased expression of growth factors, such as neurotrophins, and enhanced hippocampal neurogenesis. There is, however, a great deal of variation in environmental enrichment protocols used in the literature, making it difficult to assess the role of particular aspects of enrichment upon memory and the underlying associated mechanisms. This study sought to evaluate the efficacy of environmental enrichment, in the absence of exercise, as a cognitive enhancer and assess the role of Nerve Growth Factor (NGF), neurogenesis and synaptogenesis in this process. We report that rats housed in an enriched environment for 3 and 6 weeks (wk) displayed improved recognition memory, while rats enriched for 6 wk also displayed improved spatial and working memory. Neurochemical analyses revealed significant increases in NGF concentration and subgranular progenitor cell survival (as measured by BrdU+ nuclei) in the dentate gyrus of rats enriched for 6 wk, suggesting that these cellular changes may mediate the enrichment‐induced memory improvements. Further analysis revealed a significant positive correlation between recognition task performance and BrdU+ nuclei. In addition, rats enriched for 6 wk showed a significant increase in expression of synaptophysin and synapsin I in the dentate gyrus, indicating that environmental enrichment can increase synaptogenesis. These data indicate a time‐dependent cognitive‐enhancing effect of environmental enrichment that is independent of physical activity. These data also support a role for increased concentration of NGF in dentate gyrus, synaptogenesis, and neurogenesis in mediating this effect. © 2013 Wiley Periodicals, Inc.     

Comparing Anorectics and Bulimics on Measures of Depression,Anxiety, and Anger

Abstract

Seventeen anorectics and 33 bulimics, all female inpatients at Santa Barbara Cottage Hospital's eating disorder unit, and 57 non-eating-disordered female controls from undergraduate psychology classes at Cal Poly State University, San Luis Obispo, were compared on measures of depression, anxiety, and anger. Results indicated that both anorectics and bulimics differed from controls on depression, anxiety, and three of the six scales assessing anger. Bulimics and anorectics, however, did not significantly differ from each other in terms of depression, anxiety, and anger. The implications of these results for practice and research with eating-disordered persons are discussed.     

Implicit attitudes towards children with autism versus normally developing children as predictors of professional burnout and psychopathology

Tutors trained in applied behaviour analysis (n = 16) and mainstream school teachers (n = 16) were exposed to an Implicit Relational Assessment Procedure (IRAP) designed to assess implicit attitudes towards individuals with autism versus normally developing individuals. Participants also completed a range of explicit measures, including measures of professional burnout and psychopathology. All participants produced more negative biases towards children with autism compared to children who were normally developing. Increased negativity towards autism on the IRAP predicted similar attitudes on some of the explicit measures and also correlated with increased levels of self-reported psychopathology and professional burnout for the tutors working with children with autism. Results suggest that implicit measures of attitudes may provide a marker for professional burnout.