Question

Prepare a one-page reflection on Visual Attention...What you understand about visual attention...what do you think about visual attention... what does visual attention mean to you...How does visual attention apply to your life.... what does visual attention make you think of.

Answer 1

First lets understand about Vision-------------------------- Vision is the faculty or state of being able to see an object, place or any thing. It is a faculty of sight or power of sight, observation, perception, visual perception, etc.

Visual Attention

At its most basic, attention is defined as the process by which we select a subset from all of the available information for further processing. Attention has a complex meaning in psychology. In its early history, it was described closely related to subjective awareness of the world around us. Term “visual attention” refers to a set of cognitive operations that mediate the selection of relevant and the filtering out of irrelevant information from cluttered visual scenes. Attention is a rich and diverse field of study in and of itself, a straight forward framework for thinking about attention in the context of visual processes for eye tracking can have great practical value. It is useful to think of attention selection as an interaction, both competitive and cooperative, between bottom-up and top-down factors. There are two types of attention are there in vision Overt attention is the measurable attention of the eyes and is the 1-2 degree high-resolution central field. It is the gaze point that shows the visual targeting that takes place and is the fundamental data from eye tracking. Covert attention is not directly measurable because it involves the attention spotlight of our minds without deploying the eyes. Thus, our visual behavior, on the whole, is the result of an interplay between covert and overt attention. Covert attention detects objects and locations in the peripheral field of view

  

Figure 1--------------------------------------- Neural architecture of visual attention. The schematic diagram illustrates the widely distributed networks of brain areas that subserve visual attention and operate across various processing levels. The lateral geniculate nucleus (LGN) is the first stage at which visual processing is modulated by attention; this modulation may be under control of the thalamic reticular nucleus (TRN), which operates as a local integrator of visual information (striped blue box). Intermediate cortical areas V4 and TEO act as filter sites to reduce the amount of unwanted information (green boxes). Higher order areas in the lateral intraparietal (LIP) area and frontal eye field (FEF) cortices integrate information from the visual system and provide top‐down attentional control via feedback connections (blue boxes). Furthermore, the pulvinar (Pul) may act as an additional integrator receiving information from both the visual system and the higher order areas via the superior colliculus (SC). The connectivity of these brain systems is indicated in simplified form and does not reflect the complexity of the known anatomical connections.

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