The Effects of Textured Insoles on Cortical Activity and Quiet Bipedal Standing With and Without Vision: An EEG Study

Abstract

Wearing textured insoles (TIs) can reduce static postural sway, but the neurophysiological mechanisms by which these changes occur are not well understood. To address this issue, cortical activity was investigated in this study using electroencephalography (EEG) recordings from 19 scalp locations, in 15 healthy young adults (5 females; mean age = 27?±?4.09 years) during quiet bipedal standing, under different insole conditions (textured versus smooth), with and without vision. Compared to smooth insoles (SIs), TIs significantly reduced postural sway in two measures; anterior–posterior range and standard deviation. In the EEG data, whole-head analyses showed cortical activity in the upper alpha power band was significantly reduced for textured compared to SIs. Exploratory analyses revealed this effect was significant both with and without vision, and was more pronounced over the parietal, compared to central regions, and over central compared to frontal regions. This trend was observed in low alpha and theta bands, but the effect of insole type was not significant. Textured insoles thus appear to affect not only balance outcomes but also cortical activity. The cortical activity adaptation may represent greater information becoming readily available at the cortical level, enhancing the representation of the body in space.     

How Change Happens: Controlling Images,Mutuality, and Power

SUMMARY

Change is inevitable but it can go in a positive direction toward growth or in a negative direction. Extending Patricia Hill Collins' concept of controlling images (2000), we can see how these images interact with relational images and strategies of disconnection to obstruct growth on both the societal and the personal level. In therapy, change is defined as movement-in-relationship toward better connection; and increased connection leads to growth. Several aspects of therapy that lead to deeper and wider connection are explored, especially increasing the patient's power. Prior versions of parts of this article were presented at the Jean Baker Miller Summer Training Institutes in 2001 and 2002 and at the 2002 Learning from Women Conference sponsored by the Jean Baker Miller Training Institute and the Harvard Medical School/Cambridge Hospital in Boston, Massachusetts.

As therapists, we're “in the business” of change–change for the better. That's our goal. Another word for change for the better is growth. Change is the essence of life. It is most obvious in children but it is a necessity through all of life. Change will occur inevitably but it can go in a positive or a negative direction. Further, I believe change toward growth creates pleasure. We feel most alive and zestful when we are engaged in this expanding activity.     

Power and Freedom in Heidegger’s First Notebook

ABSTRACT

In the first notebook published in Überlegungen II-VI, which covers the years 1931 and 1932, Martin Heidegger uses a conception of power that is different to that found in his later work. Rather than power being the expression of the will to will and source of ruin for humanity, he says that humanity can only be saved from ruin if it can pave the way for an “empowerment of being” (Ermächtigung des Seins). This article will show that this early understanding of power is related to Heidegger’s conception of freedom as the essence of truth, developing his thinking on this topic from the period of 1927–1930. It will show that the terms “empowerment of being” and “letting be” (Seinlassen) are akin, and that Heidegger uses the former to distance his thinking from potential misinterpretations of the essay “On the Essence of Truth”.     

Cognitive mapping approach analyzing societal decision‐making

Cognitive mapping (CM) approach is reviewed, and the method is applied in analyzing an important case of societal decision‐making. It is shown that CM is an effective way of representing argumentation, consequences, and the linkage between the concepts. The method integrates causal modelling and rational choice theory with parts of cognitive psychology. CM allows for a systematic arguing of issues. The decision‐making problem described here concerns building a new nuclear power plant in Finland. There occurred strong proponents representing mainly the industry and technocratic and engineering experts, and an equally strong resistance represented by ordinary citizens, parliamentarians, and experts. The argumentation went ten years pro and cons before the parliament in 1993 decided against building the proposed nuclear power plant. It gives an ideal case to study the argumentation and contradictions there in as a whole by developing and applying a cognitive mapping approach.     

Commitment to Connection in a Culture of Fear

SUMMARY

This article was originally presented at the May 2004 Learning from Women Conference sponsored by Harvard Medical School and the Jean Baker Miller Training Institute. It examines the ways in which cultural and personal denial of fear and vulnerability contribute to a sense of isolation. Fear is manipulated in hierarchical settings to ensure the preservation of existing power arrangements. In a culture built on exploitation of fear, people do not experience the safety necessary to let their inevitable vulnerabilities show. Unmitigated chronic fear is an unsafe context that leads to a traumatic sense of disempowerment and personal immobilization, whether it is in war, childhood sexual abuse, living with a battering partner, or, perhaps in a more subtle way, in being immersed in massages of un-safety, danger, and having no influence in the larger public domain. Through mutual empathy we can heal these places of fear and disconnection. Mutual empathy arises in a context of profound respect, authentic responsiveness, humility, non-defensiveness, an attitude of curiosity, mindfulness (staying with the “not knowing”), and an appreciation of the power of learning. Movement out of isolation helps us pass through fear to hope and ultimately leads to growth and more connection.     

Comparison of Common Amplitude Metrics in Event-Related Potential Analysis

Abstract

Waveform data resulting from time-intensive longitudinal designs require careful treatment. In particular, the statistical properties of summary metrics in this area are crucial. We draw on event-related potential (ERP) studies, a field with a relatively long history of collecting and analyzing such data, to illustrate our points. In particular, three summary measures for a component in the average ERP waveform feature prominently in the literature: the maximum (or peak amplitude), the average (or mean amplitude) and a combination (or adaptive mean). We discuss the methodological divide associated with these summary measures. Through both analytic work and simulation study, we explore the properties (e.g., Type I and Type II errors) of these competing metrics for assessing the amplitude of an ERP component across experimental conditions. The theoretical and simulation-based arguments in this article illustrate how design (e.g., number of trials per condition) and analytic (e.g., window location) choices affect the behavior of these amplitude summary measures in statistical tests and highlight the need for transparency in reporting the analytic steps taken. There is an increased need for analytic tools for waveform data. As new analytic methods are developed to address these time-intensive longitudinal data, careful treatment of the statistical properties of summary metrics used for null hypothesis testing is crucial.     

有效的领导者及其权力的行使

本文在大量关于领导与权力的研究基础上 ,深入阐述了领导者的权力的本质及其基础 ,并区分了领导者的职权与个人权力 ,认为一味地依靠职权作为领导的基础只能产生各种消极的组织行为 ,而有效的领导者往往依靠个人权力来影响职工 ,激励职工。最后 ,本文也讨论形成个人权力的途径以及个人权力行使方法和注意的问题。     

Learning at the Margin: New Models of Strength

SUMMARY

This article was originally presented at the April, 2000 Learning from Women Conference sponsored by the Harvard Medical School and the Jean Baker Miller Training Institute. It explores the ways in which marginalization and the use of power-over maneuvers and privilege contribute to disconnection at a personal and societal level. Strength in vulnerability is proposed as an alternative to strength in isolation. The author suggests that courage is created in connection and the distorting effects of the myth of the separate-self must be challenged in order to appreciate the power of connection. This article examines specific ways to resist the disconnecting and disempowering effects of hyper-individualistic values both in and out of therapy.     

Notes on ‘Bemächtigungstrieb’ and Strachey’s translation as ‘instinct for mastery’

This short paper looks at Freud’s use of the term ‘Bemächtigungstrieb’ and its translation by Strachey as ‘instinct for mastery’ when Freud was describing the motives behind his grandson’s game with the wooden reel and string in Beyond the Pleasure Principle. The word ‘Macht’ [power], which is contained in the word ‘Bemächtigung’ points to Freud’s difficult relationship with Alfred Adler, whose early theories on the aggressive drive and later theories on ‘striving for power’ were initially rejected by Freud. Looking at the changes in Freud’s reception of Adlerian terms, some of which he later integrated into his own theory, throws light on his choice of the word ‘Bemächtigungstrieb’ in 1920, when he was just beginning to introduce his thoughts on the death instinct. A slightly different translation of the word ‘Bemächtigungstrieb’, one which takes these historical and theoretical aspects into account, could make these connections clearer for the English reader.     

The role of culture and traditions in how young children’s identities are constructed

ABSTRACT

This article explores how cultures and traditions influence the construction of young children’s identities. Identity is conceptualised as a constantly changing narrative based on how an individual sees him or herself and how s/he is perceived. We all have multiple, intersecting identities. Different meanings of culture are discussed, highlighting norms and values, ‘culture-as-the-arts’, and space for growth. Primary and secondary socialisation is emphasised, recognising the influence factors such as gender, race, class and religion. The effect of the home and of the macro-culture and different micro-cultures and traditions is considered. In relation to children’s spirituality, trusting relationships and hospitable environments, and the need to counter messages given by an individualistic and consumerist macro-culture are highlighted. An apprenticeship approach is advocated, where adults encourage questioning and strive to maintain children’s sense of agency, with a gradual transfer of power as children become older and/or more confident. It is suggested that researchers and practitioners should take more account of external factors such as gender, race and class in relation to children’s spirituality.