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Exam 6: Object Recognition

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Question 1

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Generally, in anatomical studies of object recognition deficits, posterior lesions are associated with agnosia.

A) left hemisphere ; apperceptive
B) left hemisphere ; associative
C) right hemisphere ; apperceptive
D) right hemisphere ; associative

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Question 2

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A person with apperceptive visual agnosia has difficulty in recognizing drawings of familiar objects, such as an apple. If she were asked to imagine an apple rather than to inspect a picture of an apple, you would expect to find that

A) she can generate visual images normally because agnosia does not affect internally generated information.
B) she has great difficulty in generating visual images as well as visual perception because the two skills share common brain regions.
C) she can generate visual images correctly and easily, but she cannot recognize them because of a memory deficit.
D) she has great difficulty with generating images of faces but not other kinds of objects.

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Question 3

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Warrington 1985) proposed an anatomical model of the cognitive operations necessary to explain object recognition. The first stage in this model involves the detection and categorization of visually invariant information, which occurs in the hemisphere; the second stage involves the semantic categorization of visual input, which occurs in hemispheres) .

The results of most single-cell studies of temporal lobe neurons support the gnostic unit hypothesis.

Selective damage to the primary visual cortex typically leads to visual agnosia.

With regard to the two main output pathways from the occipital lobe, is to as dorsal is to ventral.

The "what" versus "where" distinction is supported by single-cell recording studies showing that neurons in the lobes have receptive fields that are almost always located in the fovea, where high-acuity vision takes place.

Which of the following statements does NOT explain why some patients are visually agnosic for living animate) things versus nonliving inanimate) things?

It has been suggested that the fusiform gyrus is specialized for processing faces. What are the sources of evidence for and against this position?

Which of the following is NOT a major reason why the visual information reflected by an object will vary over different viewings?

Which of the following is a brain region that would likely be implicated in processing spatial relations in an outdoor scene?

is the ability to recognize an object under many different viewing conditions and in many different contexts.

In fMRI studies, when a stimulus is repeated, the BOLD response can be presentation compared to the first. This is known as the .

Eliminating a gnostic unit would

You, a neurologist, have just met a patient who suffered a stroke last year and is having trouble identifying objects. Could this person be experiencing visual agnosia? What tasks could you ask the patient to perform to help you determine the source of the problem?

Synesthesia is a deficit in the ability to recognize faces that cannot be directly attributed to deterioration in intellectual function.

According to theories of object recognition, when one sees an object such as a bicycle, recognition depends on the ability to detect properties that do not depend on specific viewing conditions.

The statement "recognition of a visual pattern at a later time occurs only if you can match the stimulus to its exact stored representation" is most consistent with which theory of pattern perception?

Patients with associative agnosia can typically describe the functions of objects if they are given the names of the objects verbally.

Category-specific deficits may be an emergent property of the fact that different kinds of information are needed to recognize living and nonliving objects.