lezione 30

In which type of patient can “summation” phenomena be observed as an indirect sign of blindsight? (30). a) Patients with a V4 lesion. b) Patients with unilateral V1 lesions. c) Patients with bilateral V1 lesions. d) Patients with akinetopsia.

Integrative agnosia is characterized by: (30). a) Deficits in integrating lines and surfaces. b) Inability to discriminate colors. c) Absence of motion perception. d) Preserved semantic memory.

Which is a function of the dorsal visual pathway? (30). a) Color perception. b) Face recognition. c) Silhouette segmentation. d) Spatial localization.

Achromatopsia is caused by damage to which area? (30). a) V4. b) V1. c) MT. d) Pulvinar.

Which of the following tests is most commonly used for an initial evaluation of a patient with suspected apperceptive visual agnosia? (30). a) Taglioni Test. b) Efron Test. c) Rorschach Test. d) Stroop Test.

Optic aphasia differs from associative agnosia by: (30). a) Inability to name objects. b) Deficit in silhouette recognition. c) Lack of semantic connection. d) Preserved recognition demonstrated by miming object use.

What is the main symptom of cortical blindness? (30). a) Loss of conscious vision. b) Inability to perceive color. c) Failure to perceive motion. d) Monocular blindness.

Where is area V4 located? (30). a) In the fusiform gyrus. b) In the superior colliculus. c) In the parietal cortex. d) In the frontal lobe.

Akinetopsia is characterized by: (30). a) Cortical blindness. b) Loss of color perception. c) Deficit in depth perception. d) Inability to perceive motion.

Which lesion is typical in patients with apperceptive visual agnosia? (30). a) Damage to the parietal cortex. b) Bilateral occipital lesions. c) Unilateral V1 lesions. d) Damage to the superior colliculus.

Which deficit is typical of associative visual agnosia? (30). a) Loss of motion perception. b) Cortical blindness. c) Inability to identify and assign meaning to seen objects. d) Failure to segment figures.

Which visual channel is specialized for color? (30). a) Magnocellular. b) Parvocellular. c) Extrastriate. d) Koniocellular.

Which test assesses the ability to identify partially occluded objects? (30). a) Recognition of incomplete figures. b) Benton Test. c) Efron Test. d) Figure–ground segmentation.

Which test allows evaluation of the internal representation of objects? (30). a) Efron Test. b) Discrimination between real objects and invented objects. c) Spatial localization test. d) Copy drawing.

A patient with blindsight can: (30). a) Localize stimuli unconsciously. b) Recognize colors. c) Perceive depth. d) Correctly name objects.

Bilateral achromatopsia is typically associated with damage to: (30). a) The parietal cortex. b) The dorsal pathway. c) V4 areas of both hemispheres. d) The optic radiations.

What is the primary deficit in severe apperceptive agnosia? (30). a) Difficulty in face recognition. b) Inaccessibility to possible internal object representations. c) Absence of semantic memory. d) Inability to discriminate luminance.

Motion perception is mainly processed in: (30). a) MT/V5 area. b) V4 area. c) Inferior parietal cortex. d) Fusiform gyrus.

Which is a characteristic of optic aphasia? (30). a) Preserved ability to mime the use of visually identified objects. b) Loss of overall visual perception. c) Deficit in perceptual integration. d) Inability to draw objects from memory.

Integrative visual agnosia implies: (30). a) Deficits also in tactile naming. b) Complete cortical blindness. c) Inability to combine visual elements into a coherent image. d) Damage to the dorsal pathway.

Which deficit is typical in akinetopsia? (30). a) Static perception of moving objects. b) Loss of chromatic vision. c) Unilateral cortical blindness. d) Impaired depth perception.

The blindsight phenomenon is explained by activation of: (30). a) The hippocampus via the superior colliculus. b) Extrastriate visual cortices via extra-geniculate pathways. c) The optic radiations. d) The superior parietal cortex.

A test sensitive to associative agnosia is: (30). a) Luminance discrimination test. b) Semantic categorization tasks. c) Segmentation of overlapping figures. d) Rorschach Test.

The optic radiations connect: (30). a) The lateral geniculate nucleus to the primary visual cortex. b) The retina to the superior colliculus. c) The primary visual cortex to the extrastriate cortex. d) The pulvinar to the fusiform gyrus.

Patients with lesions of the ventral cortex may show: (30). a) Cortical blindness. b) Akinetopsia. c) Monocular blindness. d) Prosopagnosia.

Which brain region is most associated with face recognition? (30). a) Fusiform gyrus. b) Parietal cortex. c) Superior colliculus. d) MT/V5 area.

Associative agnosia is characterized by: (30). a) Inability to assign meaning to seen objects. b) Inability to copy objects in drawing. c) Cortical blindness. d) Loss of color perception.