What is the primary characteristic of object-centered neglect?

Object-centered neglect refers to a type of neglect where the patient may have an impaired awareness of parts of an object rather than just a spatial neglect of the external environment. The primary characteristic is that patients can perceive both the left and right sides of their visual field but neglect one side of an object regardless of its location in their visual field. For example, an individual with object-centered neglect may fail to attend to the left side of a whole object, even if it is centered in their line of sight.

The other options describe different phenomena. Ignoring stimuli solely on the right side refers to right-sided neglect, commonly seen in patients with right hemispheric damage. The concept of being unable to distinguish objects placed in their visual field does not align with neglect but rather suggests a different type of perceptual or cognitive deficit. Lastly, attending only to stimuli from peripheral vision emphasizes a different aspect of visual processing and does not accurately reflect the nature of object-centered neglect, which involves the selective attention to parts of objects rather than peripheral or central visual input.