Extracting Object Identity: Ventral or Dorsal Visual Stream?
نویسندگان
چکیده
منابع مشابه
Ventral and Dorsal Visual Stream Contributions to the Perception of Object Shape and Object Location
Growing evidence suggests that the functional specialization of the two cortical visual pathways may not be as distinct as originally proposed. Here, we explore possible contributions of the dorsal "where/how" visual stream to shape perception and, conversely, contributions of the ventral "what" visual stream to location perception in human adults. Participants performed a shape detection task ...
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BACKGROUND Schizophrenia is associated with well-documented deficits in high-order cognitive processes such as attention and executive functioning. The integrity of sensory-level processing, however, has been evaluated only to a limited degree. Our study evaluated the ability of patients with schizophrenia to recognize complete objects based on fragmentary information, a process termed perceptu...
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We used positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) in human subjects to investigate whether the ventral and dorsal visual stream cooperate when active judgements about color have to be made. Color was used as the attribute, because it is processed primarily in the ventral stream. The centrally positioned stimuli were equiluminant shades of brown. The suc...
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Recent imaging studies indicated the existence of two visual pathways in humans: a ventral stream for object and form vision and a dorsal stream for spatial and motion vision. The present study was motivated by a stimulating question: Supposing shape and motion are processed separately in the two pathways, how do the respective cortical areas respond to the stimuli of ‘‘forms defined by motion’...
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It is well known that pain attracts attention and interferes with cognition. Given that the mechanisms behind this phenomenon are largely unknown, we used functional magnetic resonance imaging and presented visual objects with or without concomitant pain stimuli. To test for the specificity of pain, we compared this modulatory effect with a previously established modulatory effect of working me...
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ژورنال
عنوان ژورنال: The Journal of Neuroscience
سال: 2016
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.1102-16.2016