ELECTROMYOGRAPHIC BIOFEEDBACK AND PERCEPTUAL MOTOR TRAINING FOR HYPERACTIVITY

Occupational therapists use various treatments and methods to decrease hyperactivity in children. In this article, the etiology and treatment of hyperactivity is reviewed with special emphasis on neurophysiological indices. Application of perceptual motor and electromyographic biofeedback techniques for inhibition of hyperactive behaviors are compared and contrasted as viable treatment options for the occupational therapist. Electromyographic biofeedback and perceptual motor techniques may prove to be supportive therapeutic interventions.     

PERCEPTUAL PRESENCE

Plausibly, any adequate theory of perception must (a) solve what Alva Noë calls 'the problem of perceptual presence,' and (b) do justice to the direct realist idea that what is given in perception are garden-variety spatiotemporal particulars. This paper shows that, while Noë's sensorimotor view arguably satisfies the first of these conditions, it does not satisfy the second. Moreover, Noë is wrong to think that a naïve realist approach to perception cannot handle the problem of perceptual presence. Section three of this paper develops a version of naïve realism that meets both of the adequacy conditions above. This paper thus provides strong considerations in favor of naïve realism.     

FIXING PERCEPTUAL BELIEF

In specifying the sensory evidence for perceptual belief, thinkers have either chosen a common perceptual idiom or have invented one of their own as a starting-point for their enquiries. It is becoming clearer that the choice harbours crucial, often disputable, assumptions. I compare two sorts of constructions, a variety of propositional ones and an objectual one, and I argue that the objectual idiom is indispensable in order to explain how a perceptual belief can arise out of what is not already a belief. This has implications not only for the question of how belief is generated from perceptual evidence, but also for various other controversies. I discuss two of these implications: the character of inferences from evidence, and basic belief.     

ANALYSIS OF THE INTEREST CHECK LIST FOR INDICATIONS OF BIAS

This study was done to find out if there are certain types of bias in the Interest Check List (ICL) used by employment counselors. If one analyzes the ICL in terms of modal Worker Trait Group (WTG) areas, the concern about the frequency of certain WTG areas takes on added importance. The issue is one of validity. Is it valid to say that if one responds positively to a WTG area that has only N=1 as compared to three positive responses for a WTG area that has N=12, the former is not a modal WTG? The exclusion of certain WTG areas from the ICL is discussed. A final issue is the orientation toward data-type jobs rather than people or thing jobs in the ICL.     

BEHAVIOR ANALYSIS OF MOTION CONTROL FOR PEDIATRIC NEUROIMAGING

Magnetic resonance imaging is a promising technological advance used for research and diagnosis of disease. The procedure has no risks, except when uncooperative patients require sedation. Four normal children participated in simulated scans to study the effects of (a) antecedent changes in the imaging environment and (b) operant conditioning of movement inhibition. Changing the environment can decrease movement, but operant contingencies were necessary to decrease movement to a level that, in most cases, would allow the procedure to occur without sedation.     

HIGH-FIDELITY PERCEPTUAL LONG-TERM MEMORY

Abstract— Visual long-term memory for spatial information was assessed by measuring discrimination thresholds for the spatial frequency of sinusoidal gratings in a delayed discrimination task, with various time intervals separating test and reference stimuli The results demonstrate perfect preservation of information across J-s to 50-hr retention tervals in the sense that the spatial frequency discrimination thresholds retained at the level defined by the spatial solution of the sensory analysis This high-fidelity spatial long-term memory may represent an elementary memory mechanism for precategorical storage of visual features     

PERSONALITY AND PERCEPTUAL EXPERTISE:

Abstract— We hypothesized that people become expert at perceiving information that is related to concepts they think about a great deal, because of their extensive perceptual experience with this material To test this idea, we manipulated the capitalization of a series of briefly exposed words If expertise emerges because of perceptual experience, then people should show facilitation identifying words that they think about a great deal, but only when capitalization of these words is consistent with prior perceptual experience with these words Support for this hypothesis was found in two experiments–one in which trait words were presented to depressed and nondepressed subjects, and one in which food words were presented to anorexic and nonanorexic subjects Thus, these experiments demonstrated that personality, as well as personality disorder, has the potential to change the nature of the input people receive from the perceptual system     

发展性阅读障碍与知觉加工

近年来许多行为实验和神经生理学实验都发现 ,发展性阅读障碍与基本知觉障碍有关。在视觉领域研究者提出了巨细胞障碍假设 ,这种假设认为阅读障碍者视觉神经系统中的巨细胞障碍导致他们对某种类型的视觉刺激加工存在困难 ,进而影响阅读。在听觉领域研究发现阅读障碍者加工快速、系列、短暂呈现的声音刺激存在障碍。研究者认为阅读障碍者加工快速刺激输入障碍反映了普遍的时间知觉障碍。这方面的研究发展非常迅速 ,理论观点非常明确 ,并且直接与内在的神经机制相联系 ,形成了与传统的“语言障碍”理论迥然不同的“知觉障碍”理论。“知觉障碍”理论综合了行为、认知和神经等多个层次的研究 ,反映了神经科学发展所带来的巨大影响和认知加工模块化理论的渐渐衰退。     

CLUSTERS PRECEDE SHAPES IN PERCEPTUAL ORGANIZATION

Abstract —Does perceptual grouping require attention? Recent controversy on this question may be caused by a conflation of two aspects of grouping: element clustering (determining which elements belong together) and shape formation (determining cluster boundaries). In Experiment 1, observers enumerated diamonds that were drawn with either lines or dots. These two types of stimuli were subitized (enumerated rapidly and accurately in the range from one to three items) equally well, suggesting that clustering dots into countable entities did not detnand attention. In contrast, when target diamonds were enumerated among distractor squares in Experiment 2. only line-drawn items could be subitized. We propose that clustering and shape formation not only involve different perceptual processes, but play different functional roles in vision.     

PERCEPTUAL PROCESS AND THE EBBINGHAUS ILLUSION

Perception is shown in a block diagram which includes the instrumental errors in the sensing device, the transmission distortion in the nerves and the perceptual misjudgment in the high center. The perceptual misjudgment originates from the variation of comparison standards and the method of comparison, and would correspond to the mis-programming of the computer. A general mathematical formula for perception under the influence of various background stimuli is presented. The mechanism and equation for predicting the Ebbinghaus illusion are also presented.     

脑的感知觉无意识加工及其研究进展

该文从无意识加工与认知、脑结构,神经网络的关系等三个层面,阐述了近年来认知神经科学在无意识研究方面的进展。主要就无意识与意识的相互转化、无意识加工与认知层次、脑结构之间的关联性、突触的联结方式等问题进行了讨论,并对认知神经科学如何研究无意识与意识问题提出展望,     

内隐记忆中的神经机制研究方法

知觉启动与语义启动神经机制的研究是内隐记忆神经机制研究的两条重要途径。本文介绍了内隐记忆神经机制的研究途径之一：知觉启动神经机制的研究进展情况,并对研究中存在的问题及解决方法提出建议。     

EYEMOVEMENT AND PERCEPTUAL ADAPTATION TO CURVATURE

It is proposed that perceptual adaptation is basically an immediate localized consequence of stimulation but can become generalized through a process of conditioning by temporal contiguity. Experimental conditions were designed to assess the aftereffect of adaptation to curvature under various combinations of eye position and eye movement activity for adapting vs. test periods. In general, the results support the hypothesis that perceptual adaptation to a visual stimulus can be associated with the nonvisual factors present at the time the adaptation occurs.     

TEMNE AND ESKIMO PERCEPTUAL SKILLS1

Aptitudes perceptives des Temne et des Esquimaux. — Des épreuves de discrimination et d'aptitude spatiale ont été administrées à des sujets appartenant à deux sociétés différentes, les Temne du Sierra Leone et les Esquimaux de la Terre de Baffin (des sujets écossais ont été utilisés comme groupe de référence), pour vérifier l'hypothèse selon laquelle les aptitudes perceptives seraient plus développées chez les Esquimaux qui vivent de la chasse que chez les Temne, qui sont cultivateurs. La langue, les arts, les techniques et les méthodes éducatives des deux sociétés ont été étudiés pour voir si les caractéristiques culturelles peuvent de façon cohérente aider à l'énergence des aptitudes requises par le milieu. Bien qu'appariés en ce qui concerne l'acuité visuelle et le degré d'occidentalisation, les sujets des deux populations montrent des différences hautement significatives qui confirment l'hypothèse. l'A. en conclut que des différences perceptives doivent exister entre les membres des différentes sociétés et que ces différences sont, de façon significative, en liaison avec les caractéristiques culturelles et écologiques propres à chacune d'elles.