Hoops and Barns: a new dilemma for Sosa

Synthese - This paper critically assesses Sosa’s normative framework for performances as well as its application to epistemology. We first develop a problem for one of Sosa’s central...     

Electrophysiological correlates of high-level perception during spatial navigation

We studied the electrophysiological basis of object recognition by recording scalp electroencephalograms while participants played a virtual-reality taxi driver game. Participants searched for passengers and stores during virtual navigation in simulated towns. We compared oscillatory brain activity in response to store views that were targets or nontargets (during store search) or neutral (during passenger search). Even though store category was solely defined by task context (rather than by sensory cues), frontal electrophysiological activity in the low frequency bands (primarily in the θ [4–8 Hz] band) reliably distinguished between the target, nontarget, and neutral store views. These results implicate low-frequency oscillatory brain activity in frontal regions as an important variable in the study of the cognitive processes involved in object recognition, categorization, and other forms of high-level perception.     

Musiktherapie bei chronisch-tonalem Tinnitus

Tinnitus therapy according to the Heidelberg model of music therapy integrates psychological strategies in order to manage the perception and approaches to tinnitus aimed at curing the underlying somatic disorder. The specific musical therapeutic interventions as well as the postulated specific effective factors are explained. Several multidisciplinary studies support the effectiveness of this form of therapy. The results indicate that the therapy is highly advantageous in terms of treatment duration, effectiveness, and follow-up stability compared to customary interventions. Furthermore, the results of brain imaging strongly suggest the usefulness of further investigations and discussion in the realm of neuronal modeling of chronic tinnitus.     

Tonic Activity Level in the Right Prefrontal Cortex Predicts Individuals' Risk Taking

ABSTRACT— Human risk taking is characterized by a large amount of individual heterogeneity. In this study, we applied resting-state electroencephalography, which captures stable individual differences in neural activity, before subjects performed a risk-taking task. Using a source-localization technique, we found that the baseline cortical activity in the right prefrontal cortex predicts individual risk-taking behavior. Individuals with higher baseline cortical activity in this brain area display more risk aversion than do other individuals. This finding demonstrates that neural characteristics that are stable over time can predict a highly complex behavior such as risk-taking behavior and furthermore suggests that hypoactivity in the right prefrontal cortex might serve as a dispositional indicator of lower regulatory abilities, which is expressed in greater risk-taking behavior.     

Stationäre Kinder- und Jugendpsychiatrie sowie Psychotherapie bei substanzabhängigen Jungen und Mädchen

This study examines post-treatment outcomes (6 and 12 months post-release) of a multimodal child and adolescent psychiatric and psychotherapeutic inpatient treatment program for boys and girls diagnosed with substance use disorders (n=71) in 2 centres. Up to now there has been a lack of outcome research in this field in Germany. Outcome measures included drug use patterns and psychopathology. The greatest reductions in prevalence at 1 year follow-up occurred for cannabis, methamphetamine, cocaine and heroin use. Additionally the patients and their parents also reported significant improvements in adolescent’s psychopathology at the 1 year follow-up. The results underline the importance of disorder-specific, multimodal inpatient programs for the treatment of children and adolescents with substance use disorders.     

Bias and regulation of bias in intergroup interactions: Implicit attitudes toward Muslims and interaction quality

Previous research suggests that automatically activated bias manifests itself in behavior that can jeopardize the quality of intergroup interactions. However, regulation of automatic associations has the potential to attenuate their influence on intergroup interaction. To test this possibility, 46 non-Muslim White participants interacted with a Muslim confederate and completed an implicit measure of attitudes toward Muslims. The Quadruple Process model [Sherman, J. W., Gawronski, B., Gonsalkorale, K., Hugenberg, K., Allen, T. J., & Groom, C. J. (2008). The self-regulation of automatic associations and behavioral impulses. Psychological Review, 115, 314-335] was applied to the implicit measure to estimate participants’ strength of negative associations with Muslims and their ability to overcome those negative associations. The confederate’s ratings of how much he liked the participants were predicted by an interaction between automatic negative associations and the ability to overcome them. Specifically, when the strength of participants’ negative associations with Muslims was low, participants’ level of overcoming bias was unrelated to the confederate’s ratings. In contrast, the ability to regulate automatic negative associations predicted greater liking when those associations were strong.     

Effectance and control as determinants of video game enjoyment.

This article explores video game enjoyment originated by games' key characteristic, interactivity. An online experiment (N=500) tested experiences of effectance (perceived influence on the game world) and of being in control as mechanisms that link interactivity to enjoyment. A video game was manipulated to either allow normal play, reduce perceived effectance, or reduce perceived control. Enjoyment ratings suggest that effectance is an important factor in video game enjoyment but that the relationship between control of the game situation and enjoyment is more complex.