Awareness during drowsiness: dynamics and electrophysiological correlates.

During drowsy periods, performance on tasks requiring continuous attention becomes intermittent. Previously, we have reported that during drowsy periods of intermittent performance, 7 of 10 participants performing an auditory detection task exhibited episodes of non-responding lasting about 18 s (Makeig & Jung, 1996). Further, the time patterns of these episodes were repeated precisely in subsequent sessions. The 18-s cycles were accompanied by counterbalanced power changes within two frequency bands in the vertex EEG (near 4 Hz and circa 40 Hz). In the present experiment, performance patterns and concurrent EEG spectra were examined in four participants performing a continuous visuomotor compensatory tracking task in 15-20 minute bouts during a 42-hour sleep deprivation study. During periods of good performance, participants made compensatory trackball movements about twice per second, attempting to keep a target disk near a central ring. Autocorrelations of time series representing the distance of the target disk from the ring centre showed that during periods of poor performance marked near-18-s cycles in performance again appeared. There were phases of poor or absent performance accompanied by an increase in EEG power that was largest at 3-4 Hz. These studies show that in drowsy humans, opening and closing of the gates of behavioural awareness is marked not by the appearance of (12-14 Hz) sleep spindles, but by prominent EEG amplitude changes in the low theta band. Further, both EEG and behavioural changes during drowsiness often exhibit stereotyped 18-s cycles.     

Do human figure diagrams help alleged victims of sexual abuse provide elaborate and clear accounts of physical contact with alleged perpetrators?

The present study examined whether the use of human figure diagrams (HFDs) within a well‐structured interview was associated with more elaborate and clearer accounts about physical contact that had occurred in the course of an alleged abuse. The sample included investigative interviews of 88 children ranging from 4 to 13 years of age. Children were interviewed using the NICHD investigative interview protocol, and were then asked a series of questions in association with unclothed gender‐neutral outline diagrams of a human body. A new coding scheme was developed to examine the types and clarity of touch‐related information. Use of the HFDs was associated with reports of new touches not mentioned before and elaborations regarding the body parts reportedly touched. The HFDs especially helped clarify reports by the oldest rather than the youngest children. The clarity of children's accounts of touch was also greater when details were sought using recall prompts. Copyright © 2009 John Wiley & Sons, Ltd.     

Consumption,Contrition, and Community

Abstract : This theological reflection on consumption suggests that the affluent are complicit in the suffering of those whose labor puts food on our tables and brings us the good life. The culture of consumption tends to enthrone distortive and destructive desires that interfere with our spiritual well‐being. In the midst of that we find the working of God's grace in the most unlikely Christian practice: that of contrition. Recovering the practice of contrition can be a first step toward joy, compassion, and community.     

Perceived cultural spaces and cultural in‐betweens: Consumption among Korean Australians

• This study explores the influence of both generation and acculturation on food and media consumption patterns of Korean migrant families in Australia. Given the lack of studies specifically examining acculturative and generational influences on changes occurring in a culturally adaptive context, this study's objectives are to explore not only the experience of consumption for the families but also the differences between first‐ and second‐generation migrants and the differences within the family between parent and child. The findings of the study demonstrate the conflicted and negotiated construction of consumption around the dual cultural identities. The complexity and creolised effect of consumption appears when traditional food meets with the multi‐cuisine foodscape of Australia. The nostalgic consumption of certain kinds of ‘ethnic media’ meets up with the second generation's consumption of the same kinds of media for easy and quick‐fix ‘socialisation’. Elements of ‘reverse socialisation’ are also observed in the data. The study contributes to a better understanding of the cumulative and often intertwined effects of acculturation and/or generation in consumption changes.

Copyright © 2010 John Wiley & Sons, Ltd.     

Privileged, Typical, or not even that? – Our Place in the World According to the Copernican and the Cosmological Principles

Summary  If we are to constrain our place in the world, two principles are often appealed to in science. According to the Copernican Principle, we do not occupy a privileged position within the Universe. The Cosmological Principle, on the other hand, says that our observations would roughly be the same, if we were located at any other place in the Universe. In our paper we analyze these principles from a logical and philosophical point of view. We show how they are related, how they can be supported and what use is made of them. Our main results are: 1. There is a logical gap between both principles insofar as the Cosmological Principle is significantly stronger than the Copernican Principle. 2. A step that is often taken for establishing the Cosmological Principle on the base of the Copernican Principle and observations is not incontestable as it stands, but can be supplemented with a different argument. 3. The Cosmological Principle might be crucial for cosmology to the extent it is not supported by empirical evidence.