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21.
Dorothée?LegrandEmail author Franck?Grammont 《Phenomenology and the Cognitive Sciences》2005,4(3):249-257
We discuss the justification of Bickle's “ruthless” reductionism. Bickle intends to show that we know enough about neurons
to draw conclusions about the “whole” brain and about the mind. However, his reductionism does not take into account the complexity
of the nervous system and the fact that new properties emerge at each significant level of integration from the coupled functioning
of elementary components. From a methodological point of view, we argue that neuronal and cognitive models have to exert a
mutual constraint(MC) on each other. This approach would refuse to award any priority of cognitive approaches over neuroscience, and reciprocally,
to refuse any priority of neuroscience over cognitive approaches. MC thus argues against radicalreductionism at the methodological level. 相似文献
22.
Calcium signaling in mitral cell dendrites of olfactory bulbs of neonatal rats and mice during olfactory nerve Stimulation and beta-adrenoceptor activation 下载免费PDF全文
Yuan Q Mutoh H Debarbieux F Knöpfel T 《Learning & memory (Cold Spring Harbor, N.Y.)》2004,11(4):406-411
Synapses formed by the olfactory nerve (ON) provide the source of excitatory synaptic input onto mitral cells (MC) in the olfactory bulb. These synapses, which relay odor-specific inputs, are confined to the distally tufted single primary dendrites of MCs, the first stage of central olfactory processing. beta-adrenergic modulation of electrical and chemical signaling at these synapses may be involved in early odor preference learning. To investigate this possibility, we combined electrophysiological recordings with calcium imaging in olfactory bulb slices prepared from neonatal rats and mice. Activation of ON-MC synapses induced postsynaptic potentials, which were associated with large postsynaptic calcium transients. Neither electrical nor calcium responses were affected by beta-adrenergic agonists or antagonist. Immunocytochemical analysis of MCs and their tufted dendrites revealed clear immunoreactivity with antibodies against alpha1A (Cav2.1, P/Q-type) and alpha1B (Cav2.2, N-type), but not against alpha1C (Cav1.2, L-type) or alpha1D (Cav1.3, L-type) calcium channel subunits. Moreover, nimodipine, a blocker of L-type calcium channels, had no effect on either electrical or calcium signaling at ON-MC synapses. In contrast to previous evidence, we concluded that in neonatal rats and mice (P5-P8), mitral cells do not express significant amounts of L-type calcium channels, the calcium channel type that is often targeted by beta-adrenergic modulation. The absence of beta-adrenergic modulation on either electrical or calcium signaling at ON-MC synapses of neonatal rats and mice excludes the involvement of this mechanism in early odor preference learning. 相似文献
23.
Although positive effect of touch on compliance has been widely reported, new evaluation was made with an unusual request. 80 male bus drivers were solicited by a male or a female confederate to take the bus despite having too little money for the fare. Bus drivers were briefly touched by the confederate during solicitation. Analysis showed that bus drivers who were touched accepted the request more favorably but only when made by a female. 相似文献
24.
Benguigui N Ripoll H Broderick MP 《Journal of experimental psychology. Human perception and performance》2003,29(6):1083-1101
The goal of this study was to test whether 1st-order information, which does not account for acceleration, is used (a) to estimate the time to contact (TTC) of an accelerated stimulus after the occlusion of a final part of its trajectory and (b) to indirectly intercept an accelerated stimulus with a thrown projectile. Both tasks require the production of an action on the basis of predictive information acquired before the arrival of the stimulus at the target and allow the experimenter to make quantitative predictions about the participants' use (or nonuse) of 1st-order information. The results show that participants do not use information about acceleration and that they commit errors that rely quantitatively on 1st-order information even when acceleration is psychophysically detectable. In the indirect interceptive task, action is planned about 200 ms before the initiation of the movement, at which time the 1st-order TTC attains a critical value. 相似文献
25.
The present study examined the perceptions school-age children have of stutterers. Four groups of fourth and fifth grade students viewed a videotape with either the speaker stuttering or not stuttering while reading a poem. A semantic differential scale of bi-polar adjective pairs was used to rate the speaker on intelligence and personality traits. The current study found that there is a significant difference between school-age children's perceptions of stutterers and nonstutterers with the ratings for the disfluent speaker more negative than the ratings for the fluent speaker. It was found that children did not rate personality and intelligence related traits differently. This information can be used to validate the need for education regarding stuttering for children and those who work with children. EDUCATIONAL OBJECTIVES: The reader will learn about and be able to (1). identify perceptions of stutterers by a variety of groups; (2). discuss the implications of research on perceptions of stutterers; and (3). compare/contrast children and adults and their perceptions. 相似文献
26.
Nourrit D Delignières D Caillou N Deschamps T Lauriot B 《Journal of motor behavior》2003,35(2):151-170
The qualitative behavioral reorganizations that occurred during the acquisition of a complex motor skill were examined. Five novice participants practiced for 39 sessions of ten 1-min trials on a modified version of the ski-simulator. Analyses focused on the motion of the apparatus platform, modeled as a self-sustained oscillator. At the beginning of the experiment, all participants adopted a behavior that could be modeled with a highly nonlinear stiffness function and a Rayleigh damping function. The behavior in the final part of the experiment was captured by a qualitatively different model, with a linear stiffness function and a van der Pol damping behavior. The transition from the initial to the final model was gradual and was marked in most cases by an abrupt increase of oscillation frequency. During the transition stage, the 2 damping behaviors seemed alternately exploited within each trial. The results are discussed in the framework of the dynamical systems approach to motor coordination and learning, considering motor skill acquisition as a phase transition. 相似文献
27.
28.
This paper describes the context in which the teaching of psychology as an autonomous discipline was introduced in France, and reproduces the first psychology lecture given in France by Théodule Ribot on 9 April 1888 at The Collège de France. In France, this recognition was delayed because of the negative influence of spiritualist philosophy. It took both the acknowledged status of a man (Ribot) and a minister's decision for this new type of teaching to be accepted in France. After describing the events that took place at the Collège de France and at the Academy of Moral and Political Sciences, we reproduce in full Ribot's inaugural lecture at the Collège, an important document for the history of French psychology. We conclude by describing the circumstances in which this teaching came to its end in 1901. 相似文献
29.
The present study illustrates the usefulness of finite mixture of generalized linear models (GLMs) to examine variability in cognitive strategies during childhood. More precisely, it addresses this variability in set-shifting situations where task-goal updating is endogenously driven. In a task-switching paradigm 5–6-year-olds had to switch between color- and shape-matching rules as a function of a predetermined, predictable task sequence. A finite mixture of GLMs was fitted to explore individual differences in performance. The statistical model revealed five response profiles, defined by accuracy and response times. These response profiles likely correspond to different cognitive strategies with varying efficiency and differential relations to working memory capacity (assessed by backward digit span). These results illustrate the heuristic value of statistical modeling to reveal the behavioral and cognitive variability in the temporal dynamics of children's cognitive functioning. 相似文献
30.
Grégoire Borst Nicolas Poirel Arlette Pineau Mathieu Cassotti Olivier Houdé 《Cognitive development》2012
We investigated whether success in number-conservation and class-inclusion tasks relies on a general ability to inhibit misleading strategies. Two groups of 10-year-olds performed inter-task priming between computerized versions of class-inclusion and number-conservation tasks (Experiment 1). In one group, the class-inclusion task served as a prime and the number-conservation task as an assessment probe and vice versa in the other group. Response times were shorter in the number-conservation task when performed after the class-inclusion task (and vice versa in the other group) than in control prime-probe sequences in which the primes did not require the inhibition of a misleading strategy. Experiment 2 showed that these inter-task priming effects did not simply reflect that class inclusion and number conservation rely on the reversibility of concrete operations as Piaget would have hypothesized. Taken together the results are consistent with the neo-Piagetian assumption that cognitive development is rooted in both the acquisition of knowledge of incremental complexity and the ability to resist (inhibit) previous knowledge. Critically, the present finding suggests that the inhibitory ability is not domain- or strategy-specific. 相似文献