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311.
Cardoso de Oliveira S 《Journal of motor behavior》2004,36(4):375-8, 402-7; discussion 408-17
Franz Mechsner (2004) suggests that movements are exclusively controlled with respect to the effects that they cause in the external world and that motor control can be reduced to prediction of movement effects. Although predictive mechanisms certainly deserve a lot more attention than they have received in the past, the author argues here that prediction and control must necessarily work together to build a flexible and effective motor system. 相似文献
312.
Cognitive neuroscientists use transcranial magnetic stimulation (TMS) in several ways, from aiming to increase understanding of brain-behavior relationships to transiently improving performance, both in normals and in patients with neurological and neuropsychological deficits. Different types of TMS (single-pulse, paired-pulse, repetitive) are able to interfere with higher brain functions that require the cooperation of different brain areas and complex neuronal networks. Currently, behavioral TMS effects on the brain are usually short-lived and their underlying mechanisms not yet wholly understood. However, the aim of using TMS to develop rehabilitative strategies for motor, perceptive and cognitive functions represents an intriguing challenge. 相似文献
313.
314.
A novel set of illusions that break brightness constancy and size constancy at the same time is reported. The illusions occur when observers move towards or away from these patterns. Many variations of these phenomena and a possible explanation are discussed. 相似文献
315.
Detecting distinctions between the styles of classical music (e.g. Baroque and Romantic) is often viewed as the privilege of musicians. However, this elite perspective underestimates the abilities of non-musicians. We report that Western musicians and non-musicians, and non-Westerners (i.e. Chinese participants) rated pairs of excerpts presented auditorily as more similar as their compositional styles were closer in history. Moreover, the styles were considered by all participants as more different when presented in historical order, the older style preceding the more recent style (e.g. Baroque followed by Romantic), than the reverse (e.g. Romantic followed by Baroque). This historical distance effect appears related to rhythm (or temporal variability). 相似文献
316.
This study developed a psychometrically sound measure of closeness in Australian men's (n = 59) and women's (n = 77) same-sex friendships, the Friendship Closeness Inventory. Subscales were developed to measure both masculine and feminine styles of closeness in three domains of Emotional Closeness, Behavioural Closeness, and Cognitive Closeness. The inventory was subjected to reliability checks which supported the reliability of each scale, and factor analyses which supported the 3-factor design. Correlations among ratings on subscales suggested that the affective, behavioural, and cognitive dimensions are distinguishable but related components of friendship. Group comparisons indicated that women rated themselves closer to their same-sex friends on the affective dimension than men. Researchers have suggested that sex-role socialisation may partly account for sex differences in self-ratings of emotional expressiveness in friendships. There were no significant differences between men's and women's ratings on the behavioural and cognitive aspects of friendships. The cognitive element may need further exploration in further scale development as it measures only one aspect of cognitive closeness: the perceived influence of friends. Pending further validation, the inventory appears potentially useful for research exploring affective, behavioural, and cognitive elements of young men's and women's friendships. 相似文献
317.
Simone Herth ¶ Martin Eggersmann ‖ Giselher Herzer Roland Würschum # 《Philosophical Magazine Letters》2013,93(8):531-537
71Ge tracer diffusion was studied to gain insight into the atomistic transport processes underlying the formation of magnetic anisotropy in nanocrystalline soft-magnetic Fe73.5Si13.5B9Nb3Cu1. The interfacial diffusion characteristic was determined by the residual intergranular amorphous phase, which gives rise to a strongly reduced interface diffusivity compared with grain boundaries in metals. Ge diffusion in the nanocrystallites, which is considered to characterize Si self-diffusion, is much slower than Fe diffusion owing to the D03 order of the Fe3Si nanocrystallites. Slow Si diffusion in the nanocrystallites is identified as the rate-controlling process for the generation of the field-induced magnetic anisotropy. 相似文献
318.
Jan Stupacher Michael J. Hove Giacomo Novembre Simone Schütz-Bosbach Peter E. Keller 《Brain and cognition》2013
Groove is often described as a musical quality that can induce movement in a listener. This study examines the effects of listening to groove music on corticospinal excitability. Musicians and non-musicians listened to high-groove music, low-groove music, and spectrally matched noise, while receiving single-pulse transcranial magnetic stimulation (TMS) over the primary motor cortex either on-beat or off-beat. We examined changes in the amplitude of the motor-evoked potentials (MEPs), recorded from hand and arm muscles, as an index of activity within the motor system. Musicians and non-musicians rated groove similarly. MEP results showed that high-groove music modulated corticospinal excitability, whereas no difference occurred between low-groove music and noise. More specifically, musicians’ MEPs were larger with high-groove than low-groove music, and this effect was especially pronounced for on-beat compared to off-beat pulses. These results indicate that high-groove music increasingly engages the motor system, and the temporal modulation of corticospinal excitability with the beat could stem from tight auditory–motor links in musicians. Conversely, non-musicians’ MEPs were smaller for high-groove than low-groove music, and there was no effect of on- versus off-beat pulses, potentially stemming from suppression of overt movement. In sum, high-groove music engages the motor system, and previous training modulates how listening to music with a strong groove activates the motor system. 相似文献
319.
Elisa Filevich Patricia Vanneste Marcel Brass Wim Fias Patrick Haggard Simone Kühn 《Consciousness and cognition》2013,22(4):1271-1284
The subjective feeling of free choice is an important feature of human experience. Experimental tasks have typically studied free choice by contrasting free and instructed selection of response alternatives. These tasks have been criticised, and it remains unclear how they relate to the subjective feeling of freely choosing. We replicated previous findings of the fMRI correlates of free choice, defined objectively. We introduced a novel task in which participants could experience and report a graded sense of free choice. BOLD responses for conditions subjectively experienced as free identified a postcentral area distinct from the areas typically considered to be involved in free action. Thus, the brain correlates of subjective feeling of free action were not directly related to any established brain correlates of objectively-defined free action. Our results call into question traditional assumptions about the relation between subjective experience of choosing and activity in the brain’s so-called voluntary motor areas. 相似文献
320.
Marilyn Shatz Medha Tare Simone P. Nguyen Tess Young 《Journal of cognition and development》2013,14(1):16-36
We address the issue of children's understanding of abstract words with two studies on preschoolers' knowledge of the time-duration words minutes, hours, days, and years. The first study examines 4- and 5-year-olds' ability to answer questions about durations of common phenomena with duration terms. The second study examines 4- to 6-year-olds' comprehension of duration terms with a forced-choice pointing task. Both show that preschoolers' knowledge of such words is incomplete, but that it adheres to the pattern proposed in previous work with toddlers for abstract words. More specifically, children form lexical domains for such words even before they know their individual meanings, thereby allowing the children to often respond appropriately but not usually correctly to questions about abstract dimensions like time. 相似文献