Chapter 11. The Agnosias

Question 1

Question 11-1:
Which of the following are characteristic of aperceptive visual agnosia?
A. Inability to see to one side on extinction testing
B. Can see yet have object-recognition impairment
C. Unable to distinguisll colors and brightness
D. Unable to distinguish motion

Answer 1

Answer 11-1: B.
Patients with aperceptive visual agnosia have
the ability to see including distinguishing
colors, brightness, and motion, yet have
markedly impaired object-recognition.
Hemianopia is not a feature of aperceptive
visual agnosia. Motion may actually help,
since motion information is another cue to
interpretation of the visual input (p132)

Question 2

Question 11-2:
Which of the following differentiates aperceptive visual agnosia from associative visual agnosia?
A. Figure copying is preserved with associative visual agnosia and impaired in aperceptive visual agnosia
B. Naming objects is impaired in aperceptive visual agnosia but not associative visual agnosia
C. Associative visual agnosia is a disorder of language affecting visual inputs
D. Associative visual agnosia is characterized by having more difficulty withface recognition than object recognition

Answer 2

Answer 11-2: A.
Patients with aperceptive visual agnosia and
associative visual agnosia both have difficulty
with object recognition, however, patients
with associative visual agnosia have preserved
copying, indicating a lesion downstream from
that of the aperceptive agnosia Object naming
is impaired in both disorders. Defective facial
recognition out of proportion to object
recognition is prosopagnosia. Associative
visual agnosia is defined as defective visual
association in the absence of a language defect
which would affect testing. (p132-134)

Question 3

Questions 11-3 through 11-6:
For the following questions, indicate which of the following disorders describes the clinical situation. Select from the following list.
A. Aperceptive visual agnosia
B. Associative visual agnosia
C. Pure alexia
D. Prosopagnosia
Question 11-3:
Impaired visual word recognition with intact auditory word
recognition.

Answer 3

Answer 11-3: C.
Pure alexia is impaired visual word
recognition with preserved auditory word
recognition and writing. There may be
associated visual object agnosia. (p 134)

Question 4

Questions 11-3 through 11-6:
For the following questions, indicate which of the following disorders describes the clinical situation. Select from the following list.
A. Aperceptive visual agnosia
B. Associative visual agnosia
C. Pure alexia
D. Prosopagnosia
Question 11-4:
Impaired object recognition with preserved copying ability.

Answer 4

Answer 11-4: B.
Associative visual agnosia is impaired object
recognition in the absence of critical
blindness, and is characterized by preserved
copying. (p133)

Question 5

Questions 11-3 through 11-6:
For the following questions, indicate which of the following disorders describes the clinical situation. Select from the following list.
A. Aperceptive visual agnosia
B. Associative visual agnosia
C. Pure alexia
D. Prosopagnosia
Question 11-5:
Impaired facial recognition, out of proportion to object recognition.

Answer 5

Answer 11-5: D.
Prosopagnosia is impaired facial recognition
out of proportion to object recognition, though
the latter may be impaired as well.

Question 6

Questions 11-3 through 11-6:
For the following questions, indicate which of the following disorders describes the clinical situation. Select from the following list.
A. Aperceptive visual agnosia
B. Associative visual agnosia
C. Pure alexia
D. Prosopagnosia
Question 11-6:
Impaired visual object recognition with defective copying.

Answer 6

Answer 11-6: A.
Aperceptive visual agnosia is impaired object
recognition in the absence of cortical visual
loss. Copying is impaired, indicating a more
fundamental perceptive problem than is
manifest in associative visual agnosia. (p 131)

Question 7

Question 11-7 through 11-10:
For the following questions, select the clinical syndrome which is associated with the clinical presentation. Select from the following list.
A. Nonnverbal auditory agnosia
B. Pure word deafness
C. Auditory amusia
D. Phon agnosia
Question 11-7:
Inability to recognize familiar voices.

Answer 7

Answer 11-7: D.
Phonagnosia is the auditory counterpart to
prosopagnosia. Patients are unable to recognize familiar voices, out of proportion to other auditory processing difficulty. (p138)

Question 8

Question 11-7 through 11-10:
For the following questions, select the clinical syndrome which is associated with the clinical presentation. Select from the following list.
A. Nonnverbal auditory agnosia
B. Pure word deafness
C. Auditory amusia
D. Phon agnosia
Question 11-8:
Inability to recognize common objects by their sounds, e.g., dog, keys.

Answer 8

Answer 11-8: A.
Nonverbal auditory agnosia is impaired object
recognition when the stimulus is auditory.
Patients have the ability to hear, but making
the associative connection is impair.!d. (p136)

Question 9

Question 11-7 through 11-10:
For the following questions, select the clinical syndrome which is associated with the clinical presentation. Select from the following list.
A. Nonnverbal auditory agnosia
B. Pure word deafness
C. Auditory amusia
D. Phon agnosia
Question 11 -9:
Impaired comprehension of spoken language with preservation of basic hearing abilities.

Answer 9

Answer 11-9: B.
Pure word deafness is the only item on this list
which fulfils this definition. This is
differentiated from Wemicke’s aphasia by
preserved reading, writing, and spontaneous
speech. (p 13 7)

Question 10

Question 11-7 through 11-10:
For the following questions, select the clinical syndrome which is associated with the clinical presentation. Select from the following list.
A. Nonnverbal auditory agnosia
B. Pure word deafness
C. Auditory amusia
D. Phon agnosia
Question 11-10:
Loss of ability to recognize music.

Answer 10

Answer 11-10: C.
Auditory amusia is the inability to recognize
distinguishing features of music, such as a
particular singing voice or melody. (p137)

Question 11

Question 11-11:
Which of the following features differentiates pure word
deafness from Wernicke's aphasia?
A. Preservation of reading
B. Preservation of writing
C. Preservation of spontaneous speech
D. All of the above

Answer 11

Answer 11-11: D.
All of these are features of pure word deafuess
which are not expected in Wernicke’s aphasia.
Patients with pure word deafness can still read
and write, and the content of their spontaneous
speech is good. In contrast, patients with
Wernicke’s aphasia are able to speak, but the
content is typically lacking. (p 137)

Question 12

Question 11-12:
Which of the following features are typical of tactile agnosia?
1. The disorder is unilateral
2. Tactual memories are intact
3. Basic somesthetic abilities are preserved
4. Language is intact
Select: A = 1,2, 3. B = 1,3. C=2,4. D = 4 only. E = All

Answer 12

Answer 11-12: E.
All of these are true. Since the tactile agnosia
is typically unilateral. the unaffected side can
serve as a control to ensure that the patient has
intact verbal and other cerebral functions to
understand the task. Factual memories are
intact, indicating that the failure to recognize
objects is not a memory deficit. Basic
somesthetic skills are preserved, this feature
being required for diagnosis. (p 139)