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71.
It is largely admitted that processing numerosity relies on an innate Approximate Number System (ANS), and recent research consistently observed a relationship between ANS acuity and mathematical ability in childhood. However, studies assessing this relationship in adults led to contradictory results. In this study, adults with different levels of mathematical expertise performed two tasks on the same pairs of dot collections, based either on numerosity comparison or on cumulative area comparison. Number of dots and cumulative area were congruent in half of the stimuli, and incongruent in the other half. The results showed that adults with higher mathematical ability obtained lower Weber fractions in the numerical condition than participants with lower mathematical ability. Further, adults with lower mathematical ability were more affected by the interference of the continuous dimension in the numerical comparison task, whereas conversely higher-expertise adults showed stronger interference of the numerical dimension in the continuous comparison task. Finally, ANS acuity correlated with arithmetic performance. Taken together, the data suggest that individual differences in ANS acuity subsist in adulthood, and that they are related to mathematical ability. 相似文献
72.
Guillaume Frechette 《International Journal of Philosophical Studies》2013,21(5):654-679
AbstractPhenomenological accounts of self-consciousness are often said to combine two elements by means of a necessary connection: the primitive and irreducible subjective character of experiences and the idealist transcendental constitution of consciousness. In what follows I argue that this connection is not necessary in order for an account of self-consciousness to be phenomenological, as shown by early phenomenological accounts of self-consciousness – particularly in Munich phenomenology. First of all, I show that the account of self-consciousness defended by these phenomenologists was not influenced as much by Husserl as by two important figures in the prehistory of phenomenology: their teacher Theodor Lipps, and – indirectly, through Lipps’ influence – Hermann Lotze. Second, I show that their account of self-consciousness takes the metaphysical realism underlying Lotze’s and Lipps’ views on the distinction between feeling and sensations seriously. I argue that this distinction played a central role in the development of many early phenomenological accounts of self-consciousness. 相似文献
73.
74.
Martel G Hevi C Friebely O Baybutt T Shumyatsky GP 《Learning & memory (Cold Spring Harbor, N.Y.)》2010,17(11):582-590
Synaptically released Zn2+ is a potential modulator of neurotransmission and synaptic plasticity in fear-conditioning pathways. Zinc transporter 3 (ZnT3) knock-out (KO) mice are well suited to test the role of zinc in learned fear, because ZnT3 is colocalized with synaptic zinc, responsible for its transport to synaptic vesicles, highly enriched in the amygdala-associated neural circuitry, and ZnT3 KO mice lack Zn2+ in synaptic vesicles. However, earlier work reported no deficiency in fear memory in ZnT3 KO mice, which is surprising based on the effects of Zn2+ on amygdala synaptic plasticity. We therefore reexamined ZnT3 KO mice in various tasks for learned and innate fear. The mutants were deficient in a weak fear-conditioning protocol using single tone-shock pairing but showed normal memory when a stronger, five-pairing protocol was used. ZnT3 KO mice were deficient in memory when a tone was presented as complex auditory information in a discontinuous fashion. Moreover, ZnT3 KO mice showed abnormality in trace fear conditioning and in fear extinction. By contrast, ZnT3 KO mice had normal anxiety. Thus, ZnT3 is involved in associative fear memory and extinction, but not in innate fear, consistent with the role of synaptic zinc in amygdala synaptic plasticity. 相似文献
75.
Facilitating Effect of Multisensory Letter Encoding on Reading and Spelling in 5‐Year‐Old Children 下载免费PDF全文
Helene Labat Guillaume Vallet Annie Magnan Jean Ecalle 《Applied cognitive psychology》2015,29(3):381-391
This study aims at identifying the effect of training in the acquisition of the alphabetic principle in 5‐year‐old children. We compared the effect of multisensory training of letters in visual, haptic, graphomotor, visuo‐haptic, and visuo‐graphomotor groups. For each training type, we contrasted trained versus untrained letters in reading and spelling tasks. First, visuo‐haptic and visuo‐graphomotor training improved letter‐sound correspondence acquisition scores more than the other types of training, and this improvement persisted in the second post‐test. A cross‐modal transfer was revealed by the fact that scores increased after blindfold haptic and graphomotor experiences. Moreover, performance on untrained letters also improved, suggesting an indirect effect following the specific trained letters training. The results argue in favor of a facilitating effect of multisensory encoding on acquisition of the alphabetic principle. Practical implications for the prevention of future reading difficulties are discussed. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
76.
Laurent Dollé Jacques Droulez Daniel Bennequin Alain Berthoz Guillaume Thibault 《Advances in cognitive psychology / University of Finance and Management in Warsaw》2015,11(4):156-162
Few studies have explored how humans memorize landmarks in complex multifloored
buildings. They have observed that participants memorize an environment either
by floors or by vertical columns, influenced by the learning path. However, the
influence of the building’s actual structure is not yet known. In order to
investigate this influence, we conducted an experiment using an object-in-place
protocol in a cylindrical building to contrast with previous experiments which
used rectilinear environments. Two groups of 15 participants were taken on a
tour with a first person perspective through a virtual cylindrical three-floored
building. They followed either a route discovering floors one at a time, or a
route discovering columns (by simulated lifts across floors). They then
underwent a series of trials, in which they viewed a camera movement reproducing
either a segment of the learning path (familiar trials), or performing a
shortcut relative to the learning trajectory (novel trials). We observed that
regardless of the learning path, participants better memorized the building by
floors, and only participants who had discovered the building by columns also
memorized it by columns. This expands on previous results obtained in a
rectilinear building, where the learning path favoured the memory of its
horizontal and vertical layout. Taken together, these results suggest that both
learning mode and an environment’s structure influence the spatial memory of
complex multifloored buildings. 相似文献
77.
78.
Visual object perception is usually studied by presenting one object at a time at the fovea. However, the world around us is composed of multiple objects. The way our visual system deals with this complexity has remained controversial in the literature. Some models claim that the ventral pathway, a set of visual cortical areas responsible for object recognition, can process only one or very few objects at a time without ambiguity. Other models argue in favor of a massively parallel processing of objects in a scene. Recent experiments in monkeys have provided important data about this issue. The ventral pathway seems to be able to perform complex analyses on several objects simultaneously, but only during a short time period. Subsequently only one or very few objects are explicitly selected and consciously perceived. Here, we survey the implications of these new findings for our understanding of object processing. 相似文献
79.
By taking the MAX from their inputs, neurons in the ventral visual pathway might preserve their selectivity even when stimulated with natural scenes. This computational hypothesis has received recent direct physiological evidence from recordings of V4 neuronal responses, in a recent study by Gawne and Martin (2002). Object vision might rely more heavily on parallel processing than generally thought. 相似文献
80.
The amygdala receives multi-modal sensory inputs and projects to virtually all levels of the central nervous system. Via these widespread projections, the amygdala facilitates consolidation of emotionally arousing memories. How the amygdala promotes synaptic plasticity elsewhere in the brain remains unknown, however. Recent work indicates that amygdala neurons show theta activity during emotional arousal, and various types of oscillations during sleep. These synchronized neuronal events could promote synaptic plasticity by facilitating interactions between neocortical storage sites and temporal lobe structures involved in declarative memory. 相似文献