Exam 6: Object Recognition

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

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

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

Anatomical outputs from the occipital lobe follow two major axon bundles that terminate in the ________ and ________.

According to Farah (1990),who has studied syndromes such as prosopagnosia and alexia,holistic analysis is to analysis by parts as ________ is to ________.

Describe the visual system's dorsal and ventral pathways.In your answer,describe the kinds of information that are processed in each pathway and the lobes of the brain that are involved.Give an example of an experiment discussed in class or your text that supports this distinction in the visual system.

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

There is some evidence for a double dissociation between agnosia for animate (living)things compared to inanimate (nonliving)things.Does this mean that there are distinct brain systems for representing these two categories? Why or why not?

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

The "what" pathway involves bilateral inputs from the primary visual cortex.Based on this,what are the minimal lesions required to produce an object recognition deficit?

According to ________ hypotheses of visual object recognition,recognition is due to the collective and simultaneous activity of specialized visual neurons.

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

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

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

________ is to ________ as face recognition is to object recognition.

When a picture of a hammer is placed in front of Patient H,she is unable to identify it.How can you determine if her difficulty is in recognizing the object or in simply remembering its name?

When Farah (1990)and colleagues tested control participants and a prosopagnosic patient using upright face stimuli and inverted (upside-down)face stimuli,they found that

According to ensemble theories of object recognition,it is possible to confuse similar-looking objects because

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

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 ________ hemisphere(s).