Cognition

Abbreviations BMI: Body mass index BQW: Bern questionnaire on well being CRT: Two-choice reaction time task E-field: Electric field EHS: Electromagnetic hypersensitivity FDTD: Finite-difference time-domain GSM: Global System for Mobile Communication; second generation of mobile networks sensitive subjects. Both effects disappeared after multiple endpoint adjustment.

Background: The literature on the neuropsychological profiles in Bipolar disorder (BD) depression is sparse. The aims of the study were to assess the neurocognitive profiles in treatment-resistant, acutely admitted BD depression inpatients, to compare the neurocognitive functioning in patients with BD I and II, and to identify the demographic and clinical illness characteristics associated with cognitive functioning. Methods: Acutely admitted BD I (n = 19) and BD II (n = 32) inpatients who fulfilled the DSM-IV-TR criteria for a major depressive episode were tested with the MATRICS Consensus Cognitive Battery (MCCB), the Wechsler Abbreviated Scale of Intelligence, the National Adult Reading Test, and a battery of clinical measures.

Life expectancy is constantly increasing in the developed countries due to medical, hygiene and socioeconomic advances. Unfortunately, a longer life not always corresponds to a healthier life. Indeed, aging is associated with growing risk factors for illness associated with societal conditions (isolation, maltreatment), and neurodegenera-tive diseases. Even normal aging is associated with a cognitive decline that can hinder independence and quality of life of elderly. Thus, one major societal challenge is to build policies that support people of all ages to maintain a maximum health and functional capacity throughout their lives. Meditation could be a promising intervention in contrasting the negative effects of aging. Indeed, it has been shown to enhance cognitive efficiency in several domains, such as attention and executive functions in young adults. Nevertheless, whether these effects extend to old participants is still a matter of debate. Few studies have directly investigated this issue, reporting encouraging results in a large panel of cognitive functions, such as: attention, executive functions and memory. However, a final conclusion about the causal role of meditation and the generalization of these results is made difficult due to several methodological limitations. We propose a roadmap for future studies to pass these limitations with the hope that the present work would contribute to the development of the young research field of meditation in gerontology.

Cortical oscillations demonstrate a relationship with cognition. Moreover, they also exhibit associations with task performance and psychiatric mental disorders. This being the case, the modification of oscillations has become one of the key interests of neuroscientific approaches for cognitive enhancement. For such kind of alterations, neurofeedback (NF) of brain activity constitutes a promising tool. Concerning specific higher cognitive functions, frontal-midline theta (fm-theta) has been suggested as an important indicator of relevant brain processes. This paper presents a novel approach for an individualized, eightsession NF training to enhance fm-theta. An individual's dominant fm-theta frequency was determined based on experiments tapping executive functions. Effects of the actual NF training were compared to a pseudo-NF training. Participants of the pseudo-NF training experienced a comparable degree of motivation and commitment as the subjects of the actual NF training, but found the "training" slightly easier. In comparison to the pseudo-NF training, proper NF training significantly enhanced fm-theta amplitude in the actual training sessions, as well as during the whole course of training. However, unspecific changes in the alpha and beta frequency ranges found with both the actual NF and the pseudo-NF training groups emphasize the relevance of active control groups for neurofeedback studies.

Cognitive scientists typically classify cognitive processes as either controlled or automatic. Whereas controlled processes are slow and effortful, automatic processes are fast and involuntary. Over the past decade, we have propelled a research trajectory investigating how top-down influence in the form of suggestion can allow individuals to modulate the automaticity of cognitive processes. Here we present an overarching array of converging findings that collectively indicate that certain individuals can derail involuntary processes, such as reading, by " unringing " the proverbial bell. We examine replications of these effects from both our own laboratory and independent groups, and extend our Stroop findings to several other well-established automatic paradigms, including the McGurk effect. We thus demonstrate how, in the case of highly suggestible individuals, suggestion seems to wield control over a process that is likely even more automatic than the Stroop effect. Finally, we present findings from two novel experimental paradigms exploring the potential of shifting automaticity in the opposite direction e i.e., transforming, without practice, a controlled task into one that is automatic. Drawing on related evidence from the neuroscience of contemplative practices, we discuss how these findings pave the road to a more scientific understanding of voluntary control and automaticity, and expound on their possible experimental and therapeutic applications.

The relationship between possible selves and delinquency is explored. In this study, 238 youths between the ages of 13-16 who varied in the degree of their delinquency were asked to describe their possible selves. Although many similarities were found among their hoped-for selves, the groups of youth differed markedly in the nature of their expected and feared selves. The balance between expected possible selves and feared possible selves was the particular focus. Balance is hypothesized to occur when expected possible selves are offset by countervailing feared selves in the same domain (e.g., expecting a job, but fearing being unemployed). It was found that the officially nondelinquent youths were quite likely to display balance between their expectations and fears, unlike the most delinquent youth. In contrast, a conventional measure of self-esteem that indicates how people feel about themselves currently did not predict degree of delinquency.

Several cross-section and training studies have shown that video game play can improve cognitive functions such as visual attention, cognitive control, visual short-term memory, and general processing speed. Unfortunately the replication of these effects is not always successful, even when using similar cognitive tests to measure performance. We investigated an important aspect of this field that has not yet been empirically addressed: the role of video game genre. Our comparison of two video game player groups of specific genres (first-person shooter and real-time strategy) indicates that cognitive abilities (measured by task switching and multiple object tracking) may be differentially enhanced depending on the genre of video game being played. This result is significant as research to this point has focused on “action video games”, a loosely defined category that encompasses several video game genres, without controlling for effects potentially stemming from differences in mechanics between these video games. It also provides some evidence for the specificity of video game play benefits as a function of actions performed within the game, which is not in line with a generalized “learning to learn” accounting of these enhancements.

Background. Daily observation by nurses of the cognitive function of patients is of high ecological validity because cognitive functioning is observed in a natural setting around the clock. Aim. To evaluate why and how geriatric nurses observe the cognitive functioning of their patients. Design. Survey. Methods. A self-developed questionnaire was administered to a purposeful sample of nurses working on geriatric wards of seven acute care hospitals. The questions were open-ended. Data were analysed through content analysis. Results. The questionnaire was completed by 97 nurses (response rate 77%). Categorisation of the many objectives reported by the nurses revealed four themes: to tailor nursing interventions (51%), to determine discharge arrangements (46%), to support medical diagnosis and therapy (43%) and to map specific elements of functional capacity (34%). Nurses reported also many different domains to observe (mode 2; range 0-7), only 73% of which were actual cognitive domains. The most commonly mentioned cognitive domain was psychomotor behaviour (63%), followed by executive functions (48%), language (37%), attention (33%), thinking (25%) and consciousness (20%). Conclusions. Geriatric nurses not only made daily observations of their patients' cognitive functioning to support medical diagnoses, but also to guide nursing interventions and determine discharge arrangements. The assessment domains varied fairly widely, because the participants' understanding of the concept cognitive functioning was vague, incomplete and often incorrect. Relevance to clinical practice. This is the first study that investigated why geriatric nurses make daily observations of their patients' cognitive functioning. In addition, we explored their understanding of the concept of cognitive functioning. Based on the fact that the content of an assessment is determined by its aim, the objectives to perform daily observations have to be clear and stated explicitly. To observe patients in an unambiguous way, it will be necessarrily to develop a validated observation scale.