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181.
Jorge Almeida Bradford Z. Mahon Veronica Zapater-Raberov Aleksandra Dziuba Tiago Cabaço J. Frederico Marques Alfonso Caramazza 《Cognitive, affective & behavioral neuroscience》2014,14(1):319-335
Processing within the dorsal visual stream subserves object-directed action, whereas visual object recognition is mediated by the ventral visual stream. Recent findings suggest that the computations performed by the dorsal stream can nevertheless influence object recognition. Little is known, however, about the type of dorsal stream information that is available to assist in object recognition. Here, we present a series of experiments that explored different psychophysical manipulations known to bias the processing of a stimulus toward the dorsal visual stream in order to isolate its contribution to object recognition. We show that elongated-shaped stimuli, regardless of their semantic category and familiarity, when processed by the dorsal stream, elicit visuomotor grasp-related information that affects how we categorize manipulable objects. Elongated stimuli may reduce ambiguity during grasp preparation by providing a coarse cue to hand shaping and orientation that is sufficient to support action planning. We propose that this dorsal-stream-based analysis of elongation along a principal axis is the basis for how the dorsal visual object processing stream can affect categorization of manipulable objects. 相似文献
182.
Alessandro Chinello Veronica Cattani Claudia Bonfiglioli Stanislas Dehaene Manuela Piazza 《Developmental science》2013,16(3):377-393
In the primate brain, sensory information is processed along two partially segregated cortical streams: the ventral stream, mainly coding for objects' shape and identity, and the dorsal stream, mainly coding for objects' quantitative information (including size, number, and spatial position). Neurophysiological measures indicate that such functional segregation is present early on in infancy, and that the two streams follow independent maturational trajectories during childhood. Here we collected, in a large sample of young children and adults, behavioural measures on an extensive set of functions typically associated with either the dorsal or the ventral stream. We then used a correlational approach to investigate the presence of inter‐individual variability resulting in clustering of functions. Results show that dorsal‐ and ventral‐related functions follow two uncorrelated developmental trajectories. Moreover, within each stream, some functions show age‐independent correlations: finger gnosis, non‐symbolic numerical abilities and spatial abilities within the dorsal stream, and object and face recognition abilities within the ventral stream. This pattern of clear within‐stream cross‐task correlation seems to be lost in adults, with two notable exceptions: performance in face and object recognition on one side, and in symbolic and non‐symbolic comparison on the other, remain correlated, pointing to distinct shape recognition and quantity comparison systems. 相似文献
183.
Kate Dupuis M. Kathleen Pichora-Fuller Alison L. Chasteen Veronica Marchuk Gurjit Singh Sherri L. Smith 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(4):413-437
Many standardized measures of cognition include items that must be seen or heard. Nevertheless, it is not uncommon to overlook the possible effects of sensory impairment(s) on test scores. In the current study, we investigated whether sensory impairments could affect performance on a widely used screening tool, the Montreal Cognitive Assessment (MoCA). Three hundred and one older adults (mean age = 71 years) completed the MoCA and also hearing and vision tests. Half of the participants had normal hearing and vision, 38% impaired hearing, 5% impaired vision, and 7% had dual-sensory impairment. More participants with normal sensory acuity passed the MoCA compared to those with sensory loss, even after modifying scores to adjust for sensory factors. The results suggest that cognitive abilities may be underestimated if sensory problems are not considered and that people with sensory loss are at greater risk of cognitive decline. 相似文献
184.
This paper details the design and evaluation of a positive psychology-based employee well-being program. The effect of the program on well-being was evaluated using a mixed method design comprising of an RCT to assess outcome effectiveness, and participant feedback and facilitator field notes to assess process and impact effectiveness. Fifty government employees were randomly allocated to either an intervention or a control group (reduced to n = 23 for complete case analysis). The intervention group participated in the 6-week Working for Wellness Program and completed measures of subjective, psychological, affective and work-related well-being (SWB, PWB, AWB and WWB) at pre-intervention, post-intervention, and three and 6 month follow-ups. The control group completed the questionnaires only. As predicted, mixed ANOVAs revealed improvements in SWB and PWB for intervention group participants over time relative to control participants but these effects had reduced by time 4. There was a main effect of group on AWB in the predicted direction but no effect on WWB. Participant feedback indicated that the focus on strengths and group delivery were the most effective components of the program. Key issues were sample attrition and a lack of on-the-job support for change. Findings suggest employees can learn effective strategies for sustainably increasing their subjective and psychological well-being. 相似文献
185.
Nathan H. Azrin Jeannie Brooks Michael J. Kellen Chris Ehle Veronica Vinas 《Child & family behavior therapy》2013,35(3):263-270
ABSTRACT A single-case controlled study found that a bulimic's desire to vomit was virtually eliminated by slowed eating, but not by rapid eating. The present study attempted to determine whether this same relation was exhibited by a larger number (N = 6) of bulimics who were instructed to eat at a fast or a slow rate in a between-subjects reversal design. For all 6 participants, the urge to vomit was found to be greater during fast versus slow eating after comparable amounts of food intake. Clinically, these results suggest that eating slowly might be incorporated into treatment for bulimic vomiting. 相似文献
186.
Yuh‐Jen Guo Shu‐Ching Wang Don C. Combs Yi‐Chun Lin Veronica Johnson 《Journal of counseling and development : JCD》2013,91(3):331-335
Because of the recent introduction of a licensure law, professional counseling has grown rapidly in Taiwan after decades of slow development. The authors provide a historical review of the development of professional counseling in Taiwan and discuss the current status and future trajectory of professional counseling in Taiwan. 相似文献
187.
Theorists, clinicians, and researchers have suggested that shame is a central concern in the lives of sexual minority individuals. Cognitive theorists believe that shame occurs when a person fails to achieve his or her standards, which are often based on social, cultural, and spiritual values. Although it is asserted that stigma causes shame among members of a sexual minority, the empirical evidence suggests that negative internal cognitions are partly responsible. By targeting negative beliefs, counselors can help sexual minorities reduce their sense of shame, particularly around issues related to sexual identity. The authors offer counseling strategies for reducing shame in sexual minority clients. 相似文献
188.
Larkin A Karak S Priya R Das A Ayyub C Ito K Rodrigues V Ramaswami M 《Learning & memory (Cold Spring Harbor, N.Y.)》2010,17(12):645-653
Naive Drosophila larvae show vigorous chemotaxis toward many odorants including ethyl acetate (EA). Chemotaxis toward EA is substantially reduced after a 5-min pre-exposure to the odorant and recovers with a half-time of ~20 min. An analogous behavioral decrement can be induced without odorant-receptor activation through channelrhodopsin-based, direct photoexcitation of odorant sensory neurons (OSNs). The neural mechanism of short-term habituation (STH) requires the (1) rutabaga adenylate cyclase; (2) transmitter release from predominantly GABAergic local interneurons (LNs); (3) GABA-A receptor function in projection neurons (PNs) that receive excitatory inputs from OSNs; and (4) NMDA-receptor function in PNs. These features of STH cannot be explained by simple sensory adaptation and, instead, point to plasticity of olfactory synapses in the antennal lobe as the underlying mechanism. Our observations suggest a model in which NMDAR-dependent depression of the OSN-PN synapse and/or NMDAR-dependent facilitation of inhibitory transmission from LNs to PNs contributes substantially to short-term habituation. 相似文献
189.
How does God govern the world? For many theists “laws of nature” play a vital role. But what are these laws, metaphysically speaking? I shall argue that laws of nature are not external to the objects they govern, but instead should be thought of as reducible to internal features of properties. Recent work in metaphysics and philosophy of science has revived a dispositionalist conception of nature, according to which nature is not passive, but active and dynamic. Disposition theorists see particulars as being internally powerful rather than being governed by external laws of nature, making external laws in effect ontologically otiose. I will argue that theists should prefer a dispositionalist ontology, since it leads them toward the theory of concurrentism in divine conservation, rather than occasionalism, and revives the distinction between internal and external teleology. God on this view does not govern the world through external laws of nature, but rather through internal aspects of powerful properties. 相似文献
190.