Asymmetries in the Regulation of Visually Guided Aiming

An experiment was conducted to examine the contribution of sensory information to asymmetries in manual aiming. Movements were performed in four vision conditions. In the full-vision condition (FV), subjects were afforded vision of both the hand and the target throughout the course of the movement. In the ambient-illumination-off condition (AO), the room lights were extinguished at movement initiation, preventing vision of the moving limb. In the target-off (TO) condition, the target was extinguished upon initiation of the movement. In a no-vision (NV) condition, ambient illumination was removed and the target was extinguished upon initiation of the response movement. Results indicated that accuracy was superior in the full-vision and target-off conditions and when movements were made by the right hand. Movements made by the right hand were also of shorter mean duration. The magnitudes of performance asymmetries were uninfluenced by vision condition. Analyses of movement kinematics revealed that movements made in conditions in which there was vision of the limb exhibited a greater number of discrete modifications of the movement trajectory. On an individual-trial basis, no relationship existed between accuracy and the occurrence of discrete modifications. These data suggest that although vision greatly enhances accuracy, discrete modifications subserved by vision reflect the imposition of nonfunctional zero-order control processes upon continuous higher-order control regimes.     

Cerebral Specialization and the Control of Oral and Limb Movements for Individuals With Down’s Syndrome

In this paper we review existing research on cerebral specialization in Down’s syndrome (DS) individuals, and we present a preliminary model. The model proposes that the cerebral organization of DS persons is such that there is a dissociation of brain areas responsible for speech perception and the production of complex movement including speech. Research is presented that confirms some initial predictions of the model.     

Fitts’ Theorem in Oculomotor Control: Dissociable Movement Times for Amplitude and Width Manipulations

The authors examined whether movement times (MT) for discrete saccades are constant given equivalent index of difficulty (ID) values (i.e., unitary nature of Fitts’ theorem). To that end, we contrasted ID/MT relations for saccades equated for ID but differing with respect to their target amplitudes and widths. Results showed that MT increased with increasing ID within amplitude and width conditions; however, the ID/MT slope was markedly steeper in the former condition. Thus, the amplitude condition imposed greater information processing demands than the width condition—a result indicating that the constituent elements of Fitts’ theorem are dissociable (i.e., nonunitary). Further, examination of saccade kinematics demonstrated that the optimal MT for a given target amplitude was largely independent of target width.     

Repeated measurement of salivary cortisol within and across days among shy young adults

Temperamental shyness emerges early in childhood and remains relatively stable throughout development and has been associated with high and low levels of the stress hormone cortisol. Studies examining the relation between shyness and cortisol have been limited because they have traditionally collected only one measure of cortisol on a single day in the laboratory, restricting the reliability and diurnal profile of the measure in the participant’s everyday environment. We collected 15 saliva samples across three separate days (i.e., upon waking, +60 min post-waking, +8 h post-waking, +10 h post-waking, and bedtime) in a sample of healthy young adults selected for high and low shyness in order to characterize a portion of the diurnal cortisol rhythm. Overall, shy individuals demonstrated relatively lower cortisol across the day and across multiple mornings than non-shy adults. Higher self-reported social anxiety across multiple measures was also related to lower total cortisol levels across all participants. The present study replicates and extends our previous findings of low salivary cortisol measured in the laboratory in shy adults to repeated measurement in their everyday environments.     

Comparación entre dos escalas de medida subjetiva: Thurstone y Anderson

RESUMEN

La autora comienza exponiendo una síntesis de los modelos de Thurstone y Anderson -Ley del Juicio Comparativo y Teoría de la Integración de la Información, respectivamente- los cuales, desde supuestos distintos, permiten establecer una escala de intervalos en la medición de estímulos subjetivos. En esta investigación el objetivo es descubrir la existencia de una transformación admisible para la escala de intervalos que permita pasar de la escala de medida proporcionada por un modelo a la proporcionada por el otro, utilizando los mismos estímulos y los mismos sujetos. El trabajo concluye considerando que los resultados son esperanzadores aunque se sugiere aceptarlos con cierta cautela ya que se utilizaron pocas categorías de estímulos.     

Sport-Based Group Therapy Program for Boys with ADHD or with Other Behavioral Disorders

A group of children with Attention Deficit Hyperactivity Disorder (ADHD) was compared to children with other behavior and emotional problems. All the participants participated together in 20 weekly sessions for 1 academic year. The participants were assessed with three questionnaires on three different occasions: before the beginning of the group, at the completion of the group, and 1 year after the completion of the group. The results showed that the children indicated improvement in two behavior domains while their parents indicated improvement in the children's behavior in five domains. The most striking improvement was reduction of anxiety.     

The emotional development of a woman: A form of social perversion

Abstract

This paper presents a point of view about how Mexican women who have achieved economical and professional freedom see their process of liberation through several unconscious social, cultural, and family filters. Would it be a form of social perversion not to analyse the delay in their emotional maturity related to cultural patterns, unresolved psychic conflicts, and the social unconscious?

Gila Jiménez Rosas. Die emotionale Entwicklung von Frauen: Eine Form von sozialer Perversion.

Diese Arbeit befasst sich mit dem Selbstverständnis mexikanischer Frauen, die ökonomische und soziale Befreiung verwirklicht haben. Diese Frauen sehen aber ihren Befreiungsprozess nicht klar, sondern verschleiert durch verschiedene unbewusste soziale, kulturelle und familiäre Gegebenheiten. Es scheint eine Art sozialer Perversion in ihren verspäteten emotionalen Reifeprozessen vorzuliegen, dies auf Grund von kulturellen Mustern und ungelösten unbewussten Konflikten.

Gila Jiménez Rosas. El desarrollo emocional de la mujer: Una forma de perversión social.

Este trabajo presenta un punto de vista acerca de cómo la mujer mexicana, que consigue libertad económica y profesional, ve su proceso de liberación a través de varios filtros sociales,culturales y familiares. Sería una forma de perversión el no analizar el retraso en su madurez emocional relacionada a patrones culturales, conflictos psíquicos no resueltos y al inconsciente social?     

Memory Outcome After Pediatric Epilepsy Surgery: Objective and Subjective Perspectives

Memory was investigated in 27 children and adolescents in a longitudinal study before and at one and two years after epilepsy surgery. A comparison group with intractable epilepsy (n = 15), matched in age, sex, age of seizure onset, and IQ, was studied at comparable points in time. Methods included administration of standardized measures of story recall and face recognition, and qualitative interviews to probe the participants’ perceptions of their memory function over time. There was no significant change over time in either group on the standardized measures. Site and laterality of excision, age at surgery, and seizure outcome were not predictive of change within the surgical group. The narratives revealed facets of memory that were problematic in daily life. The objective and subjective results showed low concordance regarding change, possibly due to limitations in the objective measures for capturing semantic and autobiographical memory.     

Decoding facial blends of emotion: Visual field,attentional and hemispheric biases

Most clinical research assumes that modulation of facial expressions is lateralized predominantly across the right-left hemiface. However, social psychological research suggests that facial expressions are organized predominantly across the upper-lower face. Because humans learn to cognitively control facial expression for social purposes, the lower face may display a false emotion, typically a smile, to enable approach behavior. In contrast, the upper face may leak a person’s true feeling state by producing a brief facial blend of emotion, i.e. a different emotion on the upper versus lower face. Previous studies from our laboratory have shown that upper facial emotions are processed preferentially by the right hemisphere under conditions of directed attention if facial blends of emotion are presented tachistoscopically to the mid left and right visual fields. This paper explores how facial blends are processed within the four visual quadrants. The results, combined with our previous research, demonstrate that lower more so than upper facial emotions are perceived best when presented to the viewer’s left and right visual fields just above the horizontal axis. Upper facial emotions are perceived best when presented to the viewer’s left visual field just above the horizontal axis under conditions of directed attention. Thus, by gazing at a person’s left ear, which also avoids the social stigma of eye-to-eye contact, one’s ability to decode facial expressions should be enhanced.