Motor maps and synergies

Consider the process of raising and lowering the arm in the sagittal plane. Different parts of different muscles operate over different sectors of the angular range. How and why does the nervous system implement this differential muscle activation according to joint angle? We contend that such control depends on the adaptive formation of motor maps. These solve the problem of redundancy in the musculoskeletal system by connecting a relatively small number of cortical columns in the motor cortex to a large number of alpha motor neuron pools. We argue that motor maps are formed such that each functional muscle is activated in proportion to its moment arm about the movement. Because of this the required agonist and antagonist turning forces are generated with a minimum demand for metabolic energy. We know from biomechanical principles that, at any given posture, those muscle fibres that change length most in response to a small joint-angle change are those with the greatest moment arm. Likewise those that change least have the smallest. By establishing a model of the polynomial relationships between the lengths of functional muscles l and the corresponding changes in joint angles theta, the nervous system can generate signals partial differentiallj/ partial differentialthetai (where lj is the length of the jth functional muscle and thetai is the magnitude of the ith elemental movement). These signals create motor maps by modulating the gains of descending motor pathways. As a result, functional muscles are activated in proportion to their moment arms. This reduces the demand for metabolic energy to a minimum. Since moment arms change with joint angle, it also accounts for the experimental observations above. Such motor mapping effectively provides a minimum energy "wired-in" synergy. Established in utero, motor maps are the first stage of synergy formation and provide the basis for the development of subsequent task-dependent synergies.     

Grace and Imagination: From Fear to Freedom

Creative use of our imagination is essential if we are to live a vibrant life. Although our use of imagination is often blocked by various fears, D. W. Winnicott's insights into play, aggression, and the use of transitional objects open up paths towards greater freedom. The sacred texts, symbols, and liturgies of our religious traditions can then become the toys which engage us in profound and re-creating soul play. Through grace and the evocative examples of our teachers, we can find ways to use our imagination more freely to deepen our spiritual life and psychological wholeness.     

The journey towards active self-care and empowerment: Insights from a thematic analysis of a women's therapeutic expressive writing group (UK)

There is a strong evidence base that demonstrates the beneficial impact of engaging in therapeutic writing tasks, often with reference to the successful emotional processing of traumatic life events. This paper looks to explore the experiences and impact of a community-based therapeutic expressive writing group, which embraced a direct psychoeducational model to enhance emotional well-being in a group of women. From an experiential qualitative position that embraces a “hermeneutics of empathy”, this study uses a thematic analysis (TA) methodology (informed by the work of Braun & Clarke (2013) to explore the group members' narratives obtained through semistructured interviews. The study reveals the significance of a number of key factors, including the importance of the group setting, the identification of core therapeutic writing activities, the beneficial impact of skilled and supportive therapist facilitation, and the emotional value in “letting go” of unhelpful thoughts and feelings in order to strengthen psychological well-being and resilience. The findings have important implications for service commissioning and the proactive delivery of effective time-limited, low-cost mental health interventions within primary settings across society.     

Utilizing Creative Expressive Techniques and Group Counseling to Improve Adolescents of Divorce Social-Relational Capabilities

Adolescents of divorce present challenges for mental health counselors unfamiliar with issues this population encounters. Problems such as negative societal perceptions and low behavioral self-efficacy can combine, causing long-lasting problems. Specifically, adolescents of divorce appear to be at risk for developing inadequate social/relational capabilities. To improve adolescents’ relational and social competencies, the authors advocate for a creative combination of expressive techniques and group counseling. This brief, six-week intervention may be a viable, creative tool for counselors working with this distinct client population.     

Examining explanatory mechanisms of positive and expressive writing: Towards a resource-oriented perspective

This study tested the hypothesis that benefits of positive and expressive writing accrue when the intervention matches or activates the participant’s personal resources. Students were randomly assigned to keep a newly developed resource diary (RD, n = 114), which asked the participants to write about positive experiences and personal resources, or an expressive writing diary (ED, n = 114), which asked the participants to engage with negative emotional experiences, at home on three consecutive days per week for four weeks. Participants keeping the RD perceived significantly more social support and reported a significantly better mood at post-test than participants keeping the ED. Compared to a control group (n = 81) treatment effects of both writing interventions were higher for participants with lower pre-test values of well-being and brooding as well as for participants who wrote in an ‘atmosphere of activated resources.’ It is suggested that research should move away from testing deficit-compensating hypotheses towards a stronger resource orientation.     

The psychologist who is not a psychologist: a deconstructive reading of Wolfgang Giegerich's idea of psychology proper

This paper represents an archetypal and deconstructive reading of the work of Wolfgang Giegerich. In an attempt to extend and philosophically develop Jung's late‐life view of the objective psyche, Giegerich, via Hegel, defines psychology proper as fundamentally separate from the everyday person and the ‘human, all‐too‐human’ aspects of the soul. It is argued that, in so doing, Giegerich removes the human person from being the primary focus of his psychology and creates instead a hierarchy of ideas and values privileging syntax over semantics, the logical over the empirical, and thinking over imagination. This bypasses the emotionality of the everyday person/patient and also renders psychology proper unable to address the day‐to‐day practice of the analyst. Giegerich attempts to rectify this problem by re‐incorporating what he had previously rejected, making his theory more complex than is apparent in his binary oppositions. In the end, however, it remains a question to what extent Giegerich is successful in avoiding a binary scission (Saban 2015) or a tendency to regularly de‐emphasize the human aspect of the soul (Hoedl 2015) in his need to continue to heroically push off from the ego seeking total freedom from neurosis and from our humanity.     

Emotion Regulation Strategies,Secondary Traumatic Stress,and Compassion Satisfaction in Healthcare Providers

The aim of the present study is to examine the relationships between two emotion regulation strategies (cognitive reappraisal and expressive suppression), secondary traumatic stress, and compassion satisfaction in a sample of 190 healthcare providers. Another aim of this study is to examine if the relations between emotion regulation strategies and traumatic stress symptoms are moderated by compassion satisfaction. The respondents volunteered to take part in the research and completed self-reporting measures describing the use of emotional regulation strategies, the symptoms of secondary traumatic stress, and the compassion satisfaction. The results revealed negative associations between cognitive reappraisal and secondary traumatic stress, while expressive suppression is positively associated with arousal. Moreover, cognitive reappraisal is positively related to compassion satisfaction, while secondary traumatic stress symptoms are negatively correlated with compassion satisfaction. Furthermore, the relationship between expressive suppression and intrusions is moderated by compassion satisfaction. The implications of these results for enhancing professional quality of life in the context of secondary exposure to traumatic life events are discussed.     

Freedom and Disability Rights: Dependence,Independence, and Interdependence

The increasing focus on disability rights—as found, for instance, in the U.N. Convention on the Rights of Persons with Disabilities (CRPD)—challenges philosophical imaginaries. This article broadens the philosophical imaginary of freedom by exploring the relation of dependence, independence, and interdependence in the lives of people with disabilities. It argues (1) that traditional concepts of freedom are rather insensitive to difference within humanity, and (2) that the lives of people with severe disabilities challenge philosophers to argue and conceptualize freedom not only as independence and interdependence but also as dependence. After tracing this need through a Hegelian understanding, via Julia Kristeva's work on disability, and finally the CRPD, it concludes that a unified solution might not be possible. Hence, it argues that disability issues necessitate philosophical modesty.     

Maintenance of postural stability as a function of tilted base of support

The experiment was set-up to investigate the mechanisms of postural control by manipulating the base of support angle, using tilted platform wedges. The primary focus was to analyze the coupling of the motion of the center of mass (CoM) and the center of pressure (CoP), and the motions of the leg joints considered as individual components and synergies. The CoM-CoP coupling (both medio-lateral and anterioposterior) was preserved (∼0°) across all tilted platform angles (35°, 30°, 20°, 10° Down, 0° Flat and 10°, 20°, 25° Up), reflecting an in-phase pattern. There was high coherence (∼1) for CoM-CoP in the lower frequency range, whereas contrarily the hip, knee and ankle pair-wise couplings had values ranging between (0.4 and 0.7) across the different platform angle conditions. These findings are consistent with the view that the local pair-wise coupled variables of Hip, Knee and Ankle motions adaptively self-organized to preserve the CoM-CoP in-phase coupling at equilibrium over the baseline (0° Flat) platform condition and all other tilted platform angles. The findings support the hypothesis of CoM-CoP coupling acting as a collective variable that provides the structural integrity of the system for upright quiet standing across the platform angle conditions.