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Loss of Vision and Motor Control

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Analyze the loss of vision:

? Describe the loss of vision and the effect that it has on behavior.
? Discuss the physiology associated with the loss of vision.
? Describe at least three case studies concerning this topic and the findings from these case studies.
? Explain the importance of continued research concerning the loss of vision.

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The solution discusses the loss of vision and motor control.

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? Analyze the loss of vision:

The human visual system responds to light defined as waves of electromagnetic energy (wave lengths) (Pinel, 2006). According to Pinel, wavelengths play an important role in the perception of color and intensity, because of its significance to brightness. The amount of light reaching responsible for eyesight is due to regulation that take place in the retina. The retina is significant in the translation of light into neural signals or receptors. For instance, as Pinel explains, in the process of eye moment, the eye scans a visual field to integrate information to produce color perception. Awareness perception requires that the visual mechanisms of the bran be functioning properly, and have the capacity to communicate with the brains' verbal mechanisms. Brain damage can interfere with this mechanism.

For example, the effects of brain damage is on human visual perception can result in a loss of color perception that occurs as a result of information of a type of cones (visual receptors in the retina) that are sensitive to light and wavelengths. Any damage to the visual association cortex (any area of the cortex that receives input from more than one sensory system) can cause a category of deficits such as visual agnosia (failure to know) that refers to an inability to identify or perceive a stimulus by means of a particular sensory modality (Pinel, 2006).

? Describe the loss of vision and the effect that it has on behavior.

Visual object recognition is a hierarchical process that low-level brain areas accomplish primary sensory abilities such as form, size, color, motion, and orientation. Vision loss can affect behavior due to cognitive deficiencies. Research shows that as people age, they become more deficient in cognitive capabilities, which includes vision loss (Pinel, 2006). In their study, Milleville-Pennel, Pothier, & Jean-Michael (2010) conducted a study to explore people with brain injury showed deficits of vision in driving. The findings revealed that patients showed deficits in zone and distance. In addition, they exhibited divided attention, and lack of anticipated ...

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