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Visual Attention in PD Quantitative Modeling of Visual Attention - homepage psy utexas

Visual Attention in PD Quantitative Modeling of Visual Attention - homepage psy utexas 2025

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The document discusses a study on visual attention processes in patients with Parkinson's Disease (PD) compared to normal controls. It examines the effects of stimulus integrality on selective attention and dimensional integration through various tasks. The findings indicate that while PD patients are not impaired in integrating information from multiple dimensions, they do exhibit significant deficits in selective attention, which are not attributed to perceptual interference. The study suggests that these deficits may stem from greater variability in applying decision criteria rather than issues with learning or retaining those criteria.

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What are the types of visual attention?

There are three main types of visual attention: (1) spatial attention, which can be either overt, when an observer moves his/her eyes to a relevant location and the focus of attention coincides with the movement of the eyes, or covert, when attention is deployed to relevant locations without accompanying eye movements;

What is the meaning of the term visual selective attention?

Visual selective attention (VSA), in which certain visual objects or locations are selected in the presence of competing others (Desimone Duncan, 1995; Treisman Gelade, 1980), typically improves during childhood, through adolescence, and peaks in early adulthood (e.g., Hommel, Li, Li, 2004; Trick Enns, 1998).

What is the visual attention in psychology?

The term, visual attention describes a set of mechanisms that limit some processing to a subset of incoming stimuli. Attentional mechanisms shape what we see and what we can act upon. They allow for concurrent selection of some (preferably, relevant) information and inhibition of other information.

What is an example of visual selective attention?

Selective visual attention focuses on one visual stimulus attribute while ignoring others. For example, you might focus on one image on a screen and ignore other visual distractions.

What is the difference between spatial attention and visual attention?

These other forms of visual attention select an entire object or a specific feature of an object regardless of its location, whereas spatial attention selects a specific region of space and the objects and features within that region are processed.

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What is Duncans theory of selective visual attention?

The attentional theory of Duncan and Humphreys (1989) proposed that there is both parallel activation of a target template (from multiple items in the field) and competition between items (and between the template and non-matching items) so that, ultimately, only one object is selected.

What is an example of selective seeing?

For example, when counting the number of food items, the brain selectively perceives the images rather than the text. If asked to memorize the numbers, the brain glosses over the images. Selective perception also filters stimuli that contradict personal beliefs or cause emotional discomfort.

What are some real life examples of selective attention?

Listening to what your friend is saying when you are in a noisy room. Tuning out the sound of a TV in the background while you are reading a book. Listening to what a presenter is saying even though other noises and distractions are competing for attention.

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