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121.
We examined the effect of loading a weight on the perception of the end position of the limb. The participants haptically perceived where the end of their limb was located while they swung the limb or statically held it. The results showed that the loading of a weight influenced participants' perception only when they swung the limb; when the weight was attached to a participant's hand, the position was perceived to be farther from the body than when the weight was attached to the forearm or no weight was attached. We also found that the end position was generally underestimated when the participants swung their limb. On the other hand, when the participants statically held their limb, the perceived position was not affected by the loading of the weight and was rather precise. These results suggest that the perceptual system for limb end position is sensitive to changes in the surrounding haptic information caused by moving the limb. 相似文献
122.
David Matsumoto Theodora Consolacion Hiroshi Yamada Ryuta Suzuki Brenda Franklin Sunita Paul 《Cognition & emotion》2013,27(6):721-747
Although research has generated a wealth of information on cultural influences on emotion judgements, the information we have to date is limited in several ways. This study extends this literature in two ways, first by obtaining judgements from people in two cultures of expressions portrayed at different intensity levels, and second by incorporating individual level measures of culture to examine their contribution to observed differences. When judging emotion categories in low intensity expressions, American and Japanese judges see the emotion intended at above-chance rates, albeit lower than when judging high intensity faces. Also, American and Japanese intensity ratings of external displays and internal experiences differ dramatically for low intensity expressions compared to high intensity faces. Finally, the two cultural dimensions measured in this study—individualism versus collectivism (IC) and status differentiation (SD)—accounted for almost all of the variance in the observed differences. These findings are discussed in terms of their underlying possible mechanisms, and future research possibilities. 相似文献
123.
Forty participants (age range = 18–35 years) practiced 1 of 2 versions of an aiming task (with or without spring resistance). Knowledge of results (KR) was provided to them either immediately or after a delay of 2 trials. Immediate KR led to significantly more accurate performance during the 80 trials in acquisition but significantly less accurate performance on a 40-trial retention test given 24 hr after practice. In addition, the spring version of the task was performed significantly less accurately than the no-spring version on the 24-hr retention test. Most important, a significant interaction on the 24-hr retention test revealed that performance of the no-spring version of the task, when KR had been given after a 2-trial delay, was significantly more accurate than performance of the other 3 combinations of task version and KR schedule. The results suggest that KR dependency in motor skill learning is related to familiarity with task-intrinsic feedback in addition to the schedule on which KR is presented. 相似文献
124.
Masaya Miwa Shogo Uchida Fumika Horiba Hiroshi Takeshima Toshitaka Nabeshima Masayuki Hiramatsu 《Neurobiology of learning and memory》2010,93(3):396-405
Nociceptin binds to nociceptin opioid peptide (NOP) receptors. We reported that although high doses of nociceptin impaired memory function and that these effects were mediated via NOP receptors, low doses of nociceptin attenuated the memory impairment, and these attenuating effects were not mediated via NOP receptors. Even very low doses of nociceptin were biologically active and suggested a certain binding site for this peptide, but the mechanism underlying this attenuating effect has not yet been elucidated. In the present study, we investigated the effect of an intrahippocampal injection (i.h.) of nociceptin on memory impairment induced by U0126, a MEK inhibitor, and Rp-cAMPS, a PKA inhibitor in a step-down type passive avoidance test. U0126 (2.63 nmol/mouse, i.h.) impaired memory formation and training-dependent phosphorylation of ERK2 in the hippocampus. Co-administration of nociceptin (10 fmol/mouse) significantly attenuated memory impairment, while it did not attenuate the inhibition of training-dependent phosphorylation of ERK2 induced by U0126. On the other hand, nociceptin did not attenuate memory impairment induced by Rp-cAMPS (0.448 nmol/mouse, i.h.). Nociceptin (1 fmol/mouse) also attenuated U0126 (5.26 nmol/mouse)-induced memory impairment in NOP receptor knockout mice. Nociceptin was reported to metabolize into fragments (1–13) and (14–17) in vivo, which showed pharmacological activities without affecting NOP receptors. Our findings showed that nociceptin (14–17) (1 fmol/mouse) also attenuated U0126-induced memory impairment, while nociceptin (1–13) (0.1–10 fmol/mouse) did not attenuate memory impairment. These results suggest a novel action site or mechanism for the attenuating effects of nociceptin and its metabolite, and the sequence of nociceptin (14–17) is a critical structure. 相似文献
125.
Ando J Ono Y Yoshimura K Onoda N Shinohara M Kanba S Asai M 《Journal of personality》2002,70(5):583-610
Theoretical assumptions regarding the genetic and environmental structure of personality proposed in Cloninger's seven-factor model of temperament and character were verified in a Japanese sample by using the twin method. The Temperament and Character Inventory (TCI) was administered to 296 twin pairs ranging in age from 14 to 28 years old. Among four temperament dimensions (novelty seeking [NS], harm avoidance [HA], reward dependence [RD], and persistence [PS]), HA and PS showed significant additive genetic contributions and no shared environmental effect, supporting the original theoretical assumption. NS and RD could be explained by either genetic or shared environmental factors with nonshared environment. All three character dimensions (cooperativeness [CO], self-directedness [SD], and self-transcendence [ST]) could be explained exclusively by additive contributions and no shared environmental effect. Multivariate genetic analysis indicated that there were no significant associations between NS, HA, and RD, as the theory predicts, and the genetic components of PS, SD, and CO were derived from those of the temperament dimensions. The fourth genetic component, which had a substantial load specifically on ST and overlapped with PS, was identified. Although most of the nonshared environmental effects were trait-specific, the phenotypic correlation between NS and HA could be explained by nonshared environmental overlap. 相似文献
126.
Huichao Li Takahiro Sawaguchi Kaneaki Tsuzaki Hiroshi Noguchi 《Philosophical Magazine Letters》2015,95(6):303-311
We investigated the roles of deformation-induced ε-martensitic transformation on strain-controlled low-cycle fatigue (LCF) through crack-propagation analysis involving a notching technique that used a focused ion beam (FIB) setup on Fe–30Mn–4Si–2Al austenitic steel. Using the FIB notch, we separated the microstructure evolution into macroscopic cyclic deformation-induced and crack-propagation-induced microstructures. Following this, we clarified the fatigue crack-propagation-induced ε-martensitic transformation to decelerate crack propagation at a total strain range of 2%, obtaining an extraordinary LCF life of 1.1 × 104 cycles. 相似文献
127.
Hiroshi Masuda Hirobumi Tobe Eiichi Sato Yoshito Sugino Shigeharu Ukai 《Philosophical Magazine Letters》2015,95(7):359-366
Two-dimensional grain-boundary sliding (GBS) was achieved microscopically in an oxide-dispersion-strengthened ferritic steel with an elongated and aligned grain structure, which was deformed perpendicular to the long axis. At the border between superplastic regions II and III, microscopic deformation was observed using sub-micron grids drawn on the material surface using a focused ion beam. GBS was accommodated by intragranular deformations in narrow areas around grain boundaries, which has been predicted by earlier researchers as characteristics of the core–mantle model. These observations suggest that dislocations slip only in the mantle regions around wavy boundaries to relax the stress concentration caused by GBS during superplasticity. 相似文献
128.
Hiroshi Yama 《Thinking & reasoning》2013,19(3):295-311
It has been reported as a robust effect that people are likely to select a matching case in the Wason selection task. For example, they usually select the 5 case, in the Wason selection task with the conditional “if an E, then a not-5”. This was explained by the matching bias account that people are likely to regard a matching case as relevant to the truth of the conditional (Evans, 1998). However, because a positive concept usually constructs a smaller set than its negative one does (a rarity assumption), it is more effective to get information on the truth of the conditional in a positive set than in a negative set. Thus the optimal data selection account can also explain the effect. The set size of Q and matching by introducing negation were manipulated independently in four experiments. From the results it was inferred that the so-called matching bias was an amalgam of two different cognitive components—relevance judgement by matching and optimal data selection. 相似文献
129.
130.
Sekiya H 《Perceptual and motor skills》2006,103(2):333-343
The purposes of this study were to examine the contextual interference effect in implicit learning and to compare implicit and explicit learning. Thirty-two participants performed a pursuit-tracking task for 60 acquisition and ten retention trials. The middle segment of target pathways had only two patterns whereas other segments had random patterns. A combination of awareness and practice order for the middle segment created four acquisition conditions: implicit-blocked, implicit-serial, explicit-blocked and explicit-serial. A questionnaire and a recognition test revealed that implicit groups were unaware of the repetition. Results showed no contextual interference effect in either implicit or explicit learning. Acquisition and retention performances were better for the middle segment than the other segments regardless of awareness. No difference between the implicit and explicit groups was found, suggesting that the implicit learning condition led to learning equivalent to the explicit learning condition. 相似文献