Letter familiarity does not aid feature extraction

Summary Familiarity effects in visual letter processing were examined by means of a mutilation detection task. The uppercase E was used as the non-mutilated letter. One or two horizontal bars of the E were delected, to produce an upright or inverted F or L. These four mutilations of the E were assigned to the same response. In Experiment 1, brief exposure of the stimuli was followed by a backward mask. Experiment 2 was identical to Experiment 1, except that the display duration of the stimulus was increased and the backward mask was omitted. In Experiment 3, the overall luminance of the stimuli (luminance per point times length of the constituent line segments) was held constant. In Experiment 4, the upright and inverted non-E letter occurred in different blocks to encourage a normal (upright) letter processing strategy in the upright letter blocks. Accuracy (Experiment 1) and mean correct response times (all experiments) were not different for the upright and inverted F or for the upright and inverted L. These findings and converging results from other studies indicate that the higher familiarity of the upright letters did not aid feature extraction.     

Peer support telephone dyads for elderly women: Was this the wrong intervention?

Tested a preventive intervention in which peer telephone dyads were developed for low-income, community-living, elderly women with low perceived social support. After an initial assessment, respondents were randomly assigned to either an assessment-only control or received 10 weeks of friendly staff telephone contact. After a second assessment, participants receiving the staff contact were randomly assigned to continue that contact or were paired in dyads to continue phone contact with one another. Dependent variables were measures of perceived social support, morale, depression, and loneliness. All groups, particularly the staff contact group, showed some improvement in mental health scores over time, but there were no significant differences between intervention groups, or between intervention and assessment-only control groups. The results suggest that participation in the study and in personal assessment interviews at home were probably morale enhancing, and that additional telephone contact did not significantly add to that effect. Evidence also indicates that, in this sample, low perceived family support was significantly related to poor mental health, so it is possible that a program designed to increase friend support may have been the wrong intervention.     

Categorical perception of vocal emotion expressions

Continua of vocal emotion expressions, ranging from one expression to another, were created using speech synthesis. Each emotion continuum consisted of expressions differing by equal physical amounts. In 2 experiments, subjects identified the emotion of each expression and discriminated between pairs of expressions. Identification results show that the continua were perceived as 2 distinct sections separated by a sudden category boundary. Also, discrimination accuracy was generally higher for pairs of stimuli falling across category boundaries than for pairs belonging to the same category. These results suggest that vocal expressions are perceived categorically. Results are interpreted from an evolutionary perspective on the function of vocal expression.     

Circadian phase-shifted rats show normal acquisition but impaired long-term retention of place information in the water task

It is thought that circadian rhythms may influence learning and memory processes. However, research supporting this view does not dissociate a mnemonic impairment from other performance deficits. Furthermore, published reports do not specify the type of memory system influenced by the circadian system. The present study assessed the effects of phase shifting on acquisition and expression of place navigation in the water maze, a task sensitive to hippocampal dysfunction. The results showed that phase-shifting circadian rhythms in rats impaired the expression of place information on a retention test but not initial acquisition or encoding of place information. These results suggest that disruption of circadian rhythms may impair consolidation of previously encoded hippocampal place information.     

Die Abschaffung der somatoformen Störungen durch DSM-5 – ein akademischer Schildbürgerstreich?

The new fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) has introduced “somatic symptom disorder” as a diagnosis which is no longer differentiated into medically unexplained and explained physical symptoms. As a consequence, the status of somatoform disorders as an independent clinical group is called into question. Against all original intentions, the semantic, conceptual and practical problems of the previous classification have not been solved. The validity of the new diagnosis is doubtful because of its over-inclusive character. Further points of criticism are the less than optimal selection of psychological features, the abandonment of hypochondriasis as a homogeneous concept and imprecise workmanship of the diagnostic criteria where exclusion criteria needed for differential diagnosis are missing.     

Music as a way of knowing: tentative steps towards extending the boundaries of traditional music philosophy

Based on Howard Gardner's theory of Multiple Intelligences and Ray Jackendoff s theory of a Universal Musical Grammar this article proposes that music be regarded as a way of knowing by which man endeavours to make sense of, interpret and articulate—by means of a system of sound symbols—an aspect of reality which cannot be expressed in any other way. The four main points of this hypothesis are: (1) Music refers to a reality that is neither solely a product of my imagination, my feelings or the constitution of my body, nor to a reality that can be explained solely in empirical terms. Rather, it includes both these dimensions, but at the same time is more than both of them put together. (2) The language of music is unique in that it is structured like no other language; it is structured in accordance with the reality it refers to. (3) Unlike mathematics (or even spoken language), the language of music, in its manifestation as culturally diverse musics, is semantically and ethically not a neutral language. (4) The emergence of art music can be explained particularly well by means of the model of music as a way of knowing.     

When we like what we know – A parametric fMRI analysis of beauty and familiarity

This paper presents a neuroscientific study of aesthetic judgments on written texts. In an fMRI experiment participants read a number of proverbs without explicitly evaluating them. In a post-scan rating they rated each item for familiarity and beauty. These individual ratings were correlated with the functional data to investigate the neural correlates of implicit aesthetic judgments. We identified clusters in which BOLD activity was correlated with individual post-scan beauty ratings. This indicates that some spontaneous aesthetic evaluation takes place during reading, even if not required by the task. Positive correlations were found in the ventral striatum and in medial prefrontal cortex, likely reflecting the rewarding nature of sentences that are aesthetically pleasing. On the contrary, negative correlations were observed in the classic left frontotemporal reading network. Midline structures and bilateral temporo-parietal regions correlated positively with familiarity, suggesting a shift from the task-network towards the default network with increasing familiarity.