Conscious recollection and binding among context features

Recent research suggests that the subjective feeling of conscious recollection is uniquely characterized by joint memory for several context features while merely familiar memories lack this property (Meiser, Sattler, & Weisser, 2008). In the present research we took the novel approach of extending the dual task paradigm to the simultaneous study of subjective retrieval experience (using the remember/know procedure) and joint memory for two orthogonal context features. While dual task load during encoding lead to reductions in the frequency of the subjective experience of conscious recollection and reductions in overall context memory, joint context memory was not affected. Furthermore, the relation of higher overall context memory for consciously recollected items than for familiar items was preserved even under dual task load. These results have import implications for theories of long-term feature binding and the processes involved in producing the experience of conscious recollection.     

Disinhibition as a Mechanism in Sexual Victimization: A Prospective Study

Disinhibition was examined as a mechanism in revictimization using a prospective research design. Of the sample of 211 young adult women, 43.1% reported prior sexual victimization (birth to the time of our initial assessment) and 32.2% reported sexual assault during the 6-month follow-up. The findings suggest that disinhibition was a partial mediator. Prior sexual victimization was associated with increased disinhibition as well as increased future sexual assault. Greater disinhibition was associated with increased future sexual assault. Once disinhibition was accounted for, the original relationship between prior and future sexual assault was reduced. Disinhibition partially explained revictimization and these behaviors might serve as possible targets of change in sexual victimization prevention work.     

Time Course of Tactile Gating in a Reach-to-Grasp and Lift Task

Humans’ sensory systems are bombarded by myriad events every moment of our lives. Thus, it is crucial for sensory systems to choose and process critical sensory events deemed important for a given task and, indeed, those that affect survival. Tactile gating is well known, and defined as a reduced ability to detect and discriminate tactile events before and during movement. Also, different locations of the effector exhibit different magnitudes of sensitivity changes. The authors examined that time course of tactile gating in a reaching and grasping movement to characterize its behavior. Tactile stimulators were attached to the right and left mid-forearms and the right index finger and fifth digit. When participants performed reach-to-grasp and lift targets, tactile acuity decreased at the right forearm before movement onset (F. L. Colino, G. Buckingham, D. T. Cheng, P. van Donkelaar, &; G. Binsted, 2014 Colino, F. L., Buckingham, G., Cheng, D. T., van Donkelaar, P., &; Binsted, G. (2014). Tactile Gating in a reaching and grasping task. Physiology Reports, 2(3), e00267.[Crossref] , [Google Scholar]). However, tactile sensitivity at the right index finger decreased by nearly 20% contrary to expectations. This result reflecting that there may be an additional source acting to reduce inhibition related to tactile gating. Additionally, sensitivity improved as movement end approached. Collectively, the present results indicate that predictive and postdictive mechanisms strongly influence tactile gating.     

Different working memory capacity in normal young adults for visual and tactile letter recognition task

Thirty-nine young adult participants performing the visual and tactile n-back working memory task were compared. In the visual task, letters were presented on a computer screen and in the tactile task, plastic letters embedded on a board were explored tactually. The amount of incorrect responses increased with increasing memory load in both tasks, but was significantly lower in the visual task. Subgrouping the participants with extreme performances into "skilled" and "poor" performers showed that the best performance was found among "skilled" visual performers, and the worst one among "poor" tactile performers. There was more interindividual variation among tactile than visual performance. We conclude that tactile working memory capacity, measured here by letter recognition and letter memory, is generally more limited and shows more variability than visual memory in normal sighted participants.     

Note on aversion learning to the shape of food by monkeys

Vervet and grivet monkeys were repeatedly tested eating bar- and circle-shaped cookies. One subject was always injected with lithium immediately after eating cookies with the circle shape and learned to avoid the circular cookies while continuing to eat the bar-shaped cookies. Another subject received similar treatment except that lithium injections were always delayed 30 minutes after access to the circle-shaped cookies. She also acquired a discriminative aversion. Aversion learning was not observed with 60-minute delayed toxicosis or with lithium injections administered unpaired with access to the cookies. The two types of cookies differed only in shape, and conditioning and test sessions were conducted in total darkness to preclude the use of visual cues. Therefore, the avoidance observed in subjects conditioned with immediate and 30-minute delayed toxicosis represents a conditioned aversion to the shape of the cookies as revealed by tactile cues. These findings illustrate that monkeys can learn to select food on the basis of tactile stimuli when such stimuli are conditioned with delayed aversive stimulation.     

Holistic movement practices – An emerging category of physical activity for exercise psychology

BackgroundExercise psychology has an interest in physical activity behaviour and the psychological dimensions of physical activity delivery and outcomes. Holistic movement practices (HMPs) can be defined as physical practices embedded in holistic philosophies of well-being. As such, they go beyond what is typically offered in exercise contexts to purposefully include mental, emotional, social and/or spiritual components. Traditional Eastern movement practices (e.g., Yoga, Tai Chi, Qigong) are examples of HMPs, but a range of lesser known “Western-born” HMPs (e.g., 5Rhythms, Biodanza) also exist. HMPs have not yet received much structured attention within exercise psychology.ObjectiveTo analyse the nature of HMPs and discuss their relevance to the field of exercise psychology, with a view to raising awareness of HMPs within exercise psychology as well as encouraging and supporting future research.ContentWe discuss what we see as commonalities among HMPs and argue that it is useful to treat HMPs as a category of physical activity for exercise psychology, not only because they are forms of physical activity but also because psychological dimensions are an integral and purposeful part of these practices. We provide a tentative conceptualization of HMP philosophies, with brief examples, and consider how exercise psychology's subfields of participation behaviour, delivery parameters, outcomes, and mechanisms are applicable to the study of HMPs. Last, we briefly explore research issues, including HMPs' multicomponent nature, selected potential mechanisms, and methodologies.ConclusionHMPs are part of the leisure-based physical activities landscape in many modern societies, and deserve attention by exercise psychologists. Their embeddedness in holistic philosophies and multicomponent nature provide unique opportunities and challenges for research in exercise psychology.     

汉字触觉辨认与触觉双指模式

大量的以往研究涉及到字词识别 ,其中又有相当一部分是对字词或字母的触觉辨认研究 ,但未见汉字模式的触觉辨认研究。为了探讨汉字模式与英文字母或词模式触觉辨认的异同 ,我们先做简单汉字的视触匹配实验以确定此类实验是否可行。把 10个高频且笔画少的汉字在 6× 2 4的触觉振动仪上转换成振动的触觉模式 ,由于汉字比以往触觉模式辨认实验中所用的单指振动模式要复杂 ,所以我们不得不把汉字转换成双指模式 ,即用了两片振动显示仪来呈现一个模式 ,被试用双指接触振动片。汉语母语被试与从没学过汉字的英语母语被试各 10名对这些汉字触觉模式作了触觉与视觉模式匹配实验 ,结果表明两类被试的匹配成绩都很低而且无显著差异 ,结果可能是由于双指模式所致 ,从而不能完全说明汉字模式太难不适合触觉辨认 ,于是我们用单指模式的通常结构构建双指模式 ,使单双指模式的复杂度差异只表现在量上 ,检验了单双指模式的辨认效果 ,结果表明双指模式辨认成绩虽比单指辨认差但辨认中的认知特征如干扰中的反应竞争与知觉竞争效应相同。     

Affectivity and movement: The sense of sensing in Erwin Straus

This paper explores the notion of sensing (Empfinden) as developed by Erwin Straus. It argues that the notion of sensing is at the center of Strauss's thought about animal and human experience. Straus's originality consists in approaching sensory experience from an existential point of view. Sensing is not a mode of knowing. Sensing is distinguished from perceiving but is still a mode of relation to exteriority, and is situated on the side of what is usually called affectivity. At the same time Strauss redefines the field of that which is commonly characterized as affectivity. Sensing designates a stratum that lies deeper than the division between perceiving and feeling (s'éprouver), a self-affection that is not an alternative to the opening upon exteriority. It corresponds to a mode of immediate communication, to a sympathy with the world that does not entail any thematic dimension, but does not fall back into a blind fusion. Rather, sensing is something in the living being's mode of moving that is irreducible, and that includes a tending toward something. This revised version was published online in June 2006 with corrections to the Cover Date.     

青少年感觉寻求与烟酒使用的关系:一个有中介的调节模型

在生态系统理论和社会学习理论基础上提出一个有中介的调节模型,探讨青少年感觉寻求与烟酒使用的关系,以及压力性生活事件的调节效应和结交不良同伴的中介效应。被试为660名青少年,研究工具包括青少年感觉寻求量表、压力性生活事件量表、不良同伴问卷和烟酒使用问卷。结果显示:(1)青少年感觉寻求是烟酒使用的风险因素。(2)压力性生活事件对感觉寻求与烟酒使用之间的关系具有风险增强的调节效应。(3)这种调节效应以结交不良同伴为中介变量。因此,青少年感觉寻求与烟酒使用之间既存在调节效应又存在中介效应。     

Head and Trunk Movements During Turning Gait in Children with Cerebral Palsy

Thirty children with cerebral palsy (CP) and 22 typical developing (TD) were tested with 3D-gait analysis. At turning, trunk rotation was larger in CP2 (GMFCS II) than in TD and CP1 (GMFCS I), and head flexion was larger in CP3 (GMFCS III) than TD. Maximum head and trunk flexion values during the entire trial were larger in CP3 than in the other groups, and trunk flexion was larger in CP2 than in TD. Trial time increased with GMFCS-level. Less trunk rotation than TD and CP1 reflects spatial insecurity in CP2, which in CP3 is compensated by the walker. The flexed head and trunk in CP3 and trunk in CP2 may reflect deficits in proprioception and sensation requiring visual control of the lower limbs.