Keeping the Body Straight in the Unconstrained Locomotion of Normal and Dopamine-Stimulant-Treated Rats

During unconstrained locomotor behavior, rats move in and out of a straight posture of the body (including the head). In the present study, the stability of maintaining a straight body was examined in untreated rats and in rats treated with saline (SAL) or with I of 3 dopamine stimulants (n = 4 rats per group). The stability of maintaining a straight body can range from very high (with 0.5 mg/kg quinpirole [QUIN], to high (first half-session with 5 mg/kg (+)-amphetamine [AMPHD], to very low (second half-session with 5 mg/kg AMPH), or can be maintained at a level similar to that observed in untreated rats (with 1.25mg/kg apomorphine [APO].Stability was assessed by videotaping the rats and, then, by using frame-by-frame analysis, scoring the cumulative proportion of time spent in a straight posture, the frequency of transitions from one hemisphere to the other without being trapped in the midline plane, and the degree of lateral bending during turning and during walking on a curved path. The present study is one in a series identifying key variables that constrain as many degrees of freedom as possible in rat locomotor behavior. The uncovering of such variables is an indispensible step that precedes dynamic systems stability analysis and provides candidates for key variables for the modeling of motor coordination     

Attentional requirements in perceptual grouping depend on the processes involved in the organization

Previous studies on the role of attention in perceptual grouping have yielded contradicting findings, some suggesting that grouping requires attention and others indicating that it does not. Kimchi and Razpurker-Apfeld (Psychonomic Bulletin and Review, 11(4), 687–696, 2004) showed that attentional demands in grouping could vary according to the processes involved. The current study expanded on this, examining whether attentional demands vary for (a) different grouping principles and (b) as a function of contingent processing of element segregation and shape formation. We used the inattention paradigm with an online measure, in which participants engaged in an attentionally demanding change-detection task on a small matrix presented on a task-irrelevant backdrop of grouped elements. The backdrop grouping changed or stayed the same independently of any change in the target. Congruency effects produced by changes in backdrop grouping on target-change judgments indicate that the backdrop grouping was accomplished under inattention. The results showed congruency effects when grouping formed columns/rows by proximity but not by shape similarity, and when grouping into a distinct shape by collinearity did not involve element segregation. No congruency effects were found when grouping into a shape by collinearity or connectedness involved element segregation, except when connectedness was combined with color similarity. These results suggest that attentional demands depend on the combination of grouping principles and the complexity of the processes involved in the organization. These findings provide further support for the view that perceptual organization is a multiplicity of processes that vary in attentional demands.     

The role of empathy in the neural responses to observed human social touch

One of the ways in which individuals convey feelings and thoughts to one another is through touch. Although the neural responses to felt and observed tactile stimuli between an inanimate object and a part of the human body have been vastly explored, the neural responses to observed human interaction involving touch are not well understood. Considering that the observation of social touch involves vicarious sharing of emotions, we hypothesized that levels of empathic traits modulate the neural responses to observed touch and focused on the attenuation in the mu\alpha rhythm (8–13Hz), a neural marker that has been related to sensorimotor resonance. Fifty-four participants observed photos depicting social touch, nonsocial touch, or no touch while their electroencephalography (EEG) activity was recorded. Results showed that interindividual differences in levels of empathic traits modulated both behavioral and electrophysiological responses to human social touch, such that highly empathic participants evaluated human social touch as inducing more pleasant emotions and exhibited greater mu suppression upon observation of human social touch compared to less empathic participants. Specifically, both the behavioral and the electrophysiological responses to observed social touch were predicted by levels of personal distress, a measure of emotional contagion. These findings indicate that the behavioral and electrophysiological responses to observed social touch are modulated by levels of empathy.     

Like a phoenix: the journey toward core-self restoration following paediatric skin-burn injury: a psychoanalytic perspective

Severe and sudden injury to the skin during childhood may damage both the child’s outer appearance and mental state. Such a trauma can provoke a complete and utter breakdown of the core-self and regression to an ‘unintegrated’ state. We present the case of 11-year-old Michael, who played with matches, set a fire and sustained severe burn trauma. Michael was treated in our rehabilitation ward over several months and received skin treatment, physical therapy and psychotherapy. Paediatric burn injury is not only a physical struggle but is often accompanied by intense emotional distress of the child and his family. In describing Michael’s therapeutic process, we show how the restoration of the core-self, alongside the healing of the outer skin, provoke issues concerning early infantile skin formation, normative age-related conflicts and vulnerabilities specific to the child. By integrating psychoanalytic thinking into the clinical work of skin rehabilitation, following burn injury, we demonstrate how the significant relationship between the skin and the self manifest in different practice.     

Joint Reading of Informational Science Text Versus Narrative Stories: How Does each Affect Language and Literacy Abilities Among Kindergarteners?

The effectiveness of a literacy intervention program based on a joint interactive reading of informational science texts in increasing children’s science vocabulary, language and literacy skills, delivered by the kindergarten teacher, was examined in 34 Hebrew-speaking kindergarten children exhibiting different levels of emergent literacy skills. The impact of the informational science text intervention was compared to that of a similar program based on narrative stories. Post-intervention, both groups improved their domain-specific vocabulary – science or narrative – but the change in domain-specific vocabulary learning was lower in the informational science group as opposed to the narrative group. Improvement was also found with regard to general vocabulary, print concepts, and listening comprehension following both interventions. Change in scientific vocabulary was positively related with change in morphological awareness, change in print concepts, and listening comprehension. No such findings were found with regard to narrative vocabulary. The study suggests that a short informational science intervention program can enhance science vocabulary and literacy skills in kindergarten children and should be used more often in kindergartens.