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Full-Text Articles in Psychology
Missing The Big Picture: Impaired Development Of Global Shape Processing In Autism, K. Suzanne Scherf, Beatriz Luna, Ruth Kimchi, Nancy Minshew, Marlene Behrmann
Missing The Big Picture: Impaired Development Of Global Shape Processing In Autism, K. Suzanne Scherf, Beatriz Luna, Ruth Kimchi, Nancy Minshew, Marlene Behrmann
Marlene Behrmann
Individuals with autism exhibit hypersensitivity to local elements of the input, which may interfere with the ability to group visual elements perceptually. We investigated the development of perceptual grouping abilities in high-functioning individuals with autism (HFA) across a wide age range (8–30 years) using a classic compound letter global/local (GL) task and a more fine-grained microgenetic prime paradigm (MPP), including both few- and many-element hierarchical displays. In the GL task, contrary to the typically developing (TD) controls, HFA participants did not develop an increasing sensitivity to the global information with age. In the MPP, like the TD controls, individuals with …
Visual Attention Deficits In Alzheimer’S Disease: Relationship To Hmpao Spect Cortical Hypoperfusion, Brandon Vasquez, Brian Buck, Sandra Black, Farrell Leibovitch, Nancy Lobaugh, Curtis Caldwell, Marlene Behrmann
Visual Attention Deficits In Alzheimer’S Disease: Relationship To Hmpao Spect Cortical Hypoperfusion, Brandon Vasquez, Brian Buck, Sandra Black, Farrell Leibovitch, Nancy Lobaugh, Curtis Caldwell, Marlene Behrmann
Marlene Behrmann
Patients with Alzheimer's disease (AD) display a multiplicity of cognitive deficits in domains such as memory, language, and attention, all of which can be clearly linked to the underlying neuropathological alterations. The typical degenerative changes occur early on in the disease in the temporal–parietal lobes, with other brain regions, such as the frontal cortex, becoming more affected as the disease progresses. In light of the importance of the parietal cortex in mediating visuospatial attentional processing, in the present study, we investigated a deficit in covert orienting of visual attention and its relationship to cortical hypoperfusion in AD. We characterized the …
Acquisition Of Long-Term Visual Representations: Psychological And Neural Mechanisms, Marlene Behrmann, Joy Geng, Chris Baker
Acquisition Of Long-Term Visual Representations: Psychological And Neural Mechanisms, Marlene Behrmann, Joy Geng, Chris Baker
Marlene Behrmann
How do we so rapidly achieve an organized, coherent visual percept of our superficially chaotic world? One way of reducing the complexity of the input is to take advantage of the statistical regularities and regular co-occurrences between aspects of objects and between objects and their spatial locations. In this chapter, converging data obtained from normal and brain-damaged individuals, as well as from single unit recording studies in monkeys, are presented, all of which address the psychological and neural mechanisms associated with statistical learning. The first section deals with learning regularities associated with particular spatial locations, presumably a function of the …