Towards a neural basis of music perception

Music perception involves complex brain functions underlying acoustic analysis, auditory memory, auditory scene analysis, and processing of musical syntax and semantics. Moreover, music perception potentially affects emotion, influences the autonomic nervous system, the hormonal and immune systems, and activates (pre)motor representations. During the past few years, research activities on different aspects of music processing and their neural correlates have rapidly progressed. This article provides an overview of recent developments and a framework for the perceptual side of music processing. This framework lays out a model of the cognitive modules involved in music perception, and incorporates information about the time course of activity of some of these modules, as well as research findings about where in the brain these modules might be located.     

Cognitive assessment of social anxiety: a comparison of self-report and thought listing methods

The goal of the present study was to compare 2 cognitive assessment methods for social anxiety: a thought listing and a self-report method. The focus of this study was on the convergent and divergent validity of these methods using a multi-trait multi-method approach. Furthermore, treatment sensitivity was explored. Fifty-eight patients with social phobia completed thought listings followed by 2 different social stress tasks before and after an exposure group treatment (n = 33), or following a waiting period (n = 25). One task consisted of speaking in front of 2 confederates while the other task involved initiating a conversation with an opposite-sex confederate. Two questionnaires measuring positive and negative self-statements regarding public speaking and social interactions were also completed. To compare the balance of positive and negative thoughts, the State of Mind ratio [positive thoughts/(positive+negative thoughts)] was calculated for both cognitive assessment methods. Results demonstrate that methods related to social interaction anxiety showed better convergent validity than methods related to public speaking anxiety; however, public speaking methods captured treatment effects better than methods related to social interaction anxiety. This study questions the common assumption that different cognitive assessment methods measure the same construct.     

Patrick Sériot: Structure et totalité. Les origines intellectuelles du structuralisme en Europe centrale et orientale

Studies in East European Thought -     

Coherence-driven resolution of referential ambiguity: A computational model

We present a computational model that provides a unified account of inference, coherence, and disambiguation. It simulates how the build-up of coherence in text leads to the knowledge-based resolution of referential ambiguity. Possible interpretations of an ambiguity are represented by centers of gravity in a high-dimensional space. The unresolved ambiguity forms a vector in the same space. This vector is attracted by the centers of gravity, while also being affected by context information and world knowledge. When the vector reaches one of the centers of gravity, the ambiguity is resolved to the corresponding interpretation. The model accounts for reading time and error rate data from experiments on ambiguous pronoun resolution and explains the effects of context informativeness, anaphor type, and processing depth. It shows how implicit causality can have an early effect during reading. A novel prediction is that ambiguities can remain unresolved if there is insufficient disambiguating information.     

Tone sequences with conflicting fundamental pitch and timbre changes are heard differently by musicians and nonmusicians

An Auditory Ambiguity Test (AAT) was taken twice by nonmusicians, musical amateurs, and professional musicians. The AAT comprised different tone pairs, presented in both within-pair orders, in which overtone spectra rising in pitch were associated with missing fundamental frequencies (F0) falling in pitch, and vice versa. The F0 interval ranged from 2 to 9 semitones. The participants were instructed to decide whether the perceived pitch went up or down; no information was provided on the ambiguity of the stimuli. The majority of professionals classified the pitch changes according to F0, even at the smallest interval. By contrast, most nonmusicians classified according to the overtone spectra, except in the case of the largest interval. Amateurs ranged in between. A plausible explanation for the systematic group differences is that musical practice systematically shifted the perceptual focus from spectral toward missing-F0 pitch, although alternative explanations such as different genetic dispositions of musicians and nonmusicians cannot be ruled out. ((c) 2007 APA, all rights reserved).     

Systemische Therapie bei Störungen des Erwachsenenalters

Background

Systemic therapy is a scientifically acknowledged form of psychotherapy in the US and many European countries, but not yet in Germany.

Method

All randomized (or parallelized) controlled trials (RCT) evaluating systemic couples/family/individual therapy with adult index patients published in English, German or Spanish up to the end of 2004 were identified via data base searches and cross-references in other meta-analyses and reviews. A meta-analysis of the identified RCT was performed.

Results

28 RCT (43 publications) evaluating systemic therapy with adult index patients suffering from clinical disorders (ICD-10) were identified. Systemic therapy is efficacious with regard to substance disorders, mental/social factors interacting with somatic disorders, schizophrenia, depression and eating disorders. The results are stable across follow-up periods of up to 5 years.

Conclusion

According to the criteria of the German Scientific Advisory Board Psychotherapy (Wissenschaftlicher Beirat Psychotherapie) there seems to be good evidence for the efficacy of systemic therapy in at least four fields of application of adult psychotherapy.     

Cognitive factors that maintain social anxiety disorder: a comprehensive model and its treatment implications

Social anxiety disorder (SAD) is a common, distressing and persistent mental illness. Recent studies have identified a number of psychological factors that could explain the maintenance of the disorder. These factors are presented here as part of a comprehensive psychological maintenance model of SAD. This model assumes that social apprehension is associated with unrealistic social standards and a deficiency in selecting attainable social goals. When confronted with challenging social situations, individuals with SAD shift their attention toward their anxiety, view themselves negatively as a social object, overestimate the negative consequences of a social encounter, believe that they have little control over their emotional response, and view their social skills as inadequate to effectively cope with the social situation. In order to avoid social mishaps, individuals with SAD revert to maladaptive coping strategies, including avoidance and safety behaviors, followed by post-event rumination, which leads to further social apprehension in the future. Possible disorder-specific intervention strategies are discussed.     

An extension of uncertainty management theory to the self: the relationship between justice, social comparison orientation, and antisocial work behaviors

A multisource field study of 103 employees and their supervisors tested an extension of uncertainty management theory (E. A. Lind & K. Van den Bos, 2002; K. Van den Bos & E. A. Lind, 2002). According to this theory, persons high in social comparison orientation (F. X. Gibbons & B. P. Buunk, 1999) experience chronic uncertainty about the self. It was hypothesized that this should strengthen the effects of interactional and procedural justice perceptions on antisocial work behaviors. As predicted, the negative relationship between employee perceptions of interactional justice and supervisory ratings of antisocial work behaviors was stronger for people who are high as compared with low in social comparison orientation. Results provide evidence for an extension of uncertainty management theory to the self-domain.     

Neural substrates for episodic encoding and recognition of unfamiliar faces

Functional MRI was used to investigate brain activation in healthy volunteers during encoding of unfamiliar faces as well as during correct recognition of newly learned faces (CR) compared to correct identification of distractor faces (CF), missed alarms (not recognizing previously presented faces, MA), and false alarms (incorrectly recognizing newly presented faces, FA). Encoding was associated with frontal, occipital/fusiform, thalamic, and cerebellar activation. CR produced activation in frontal and cerebellar regions, whereas CF activated frontal and occipitotemporal regions as well as the thalamus. In contrast, MA was associated with frontal and thalamic activation, and FA with frontal activation. The CR minus CF comparison showed left lateral prefrontal and parietal activation, while no suprathreshold positive signal changes were detected when subtracting the other conditions (CR minus MA, CR minus FA, and vice versa). These results support the view that the successful episodic retrieval of newly learned faces is based on a dorsal visual stream mechanism.