Deck 14: Extension: A - The Parietal Lobes

Question 1

There is a close functional relationship between the parietal cortex and the _____, which probably has an important role in the control of spatially guided behavior.

A) hippocampus
B) temporal lobe
C) corpus callosum
D) prefrontal cortex

Answer 1

prefrontal cortex

Question 2

The ability to perform complex mental transformations such as object rotation, at least in males, varies with the:

A) organization of gray matter in the anterior parietal cortex.
B) organization of white matter in the posterior parietal cortex.
C) organization of gray matter in the posterior parietal cortex.
D) capacity of working memory.

Answer 2

organization of white matter in the posterior parietal cortex.

Question 3

A person suffering from anosognosia:

A) cannot perceive objects moving through space.
B) cannot localize or name body parts.
C) may deny even obvious signs of illness.
D) cannot do mental arithmetic.

Answer 3

may deny even obvious signs of illness.

Question 4

Sensory feedback that indicates the actual outcome of intended movements is known as the _____ copy.

A) afference
B) efference
C) effervescent
D) reentrant

Question 5

Polysensory neurons in a monkey's posterior parietal cortex have been shown to increase their firing rate when:

A) a loud noise is sounded near the animal.
B) the ambient lighting is changed.
C) the animal attends to a target object or moves toward it.
D) the animal recognizes the object.

Question 6

In von Economo's mapping system, area PE MOST closely corresponds to Brodmann area(s) _____.

A) 1, 2, and 3
B) 5 and 7
C) 39
D) 40 and 43

Question 7

Damage to the posterior parietal cortex would MOST interfere with:

A) distal movements of fingers.
B) identification of a clock as being a clock.
C) reaching toward a briefly presented visual target.
D) the ability to walk normally.

Question 8

The study by Andersen and colleagues found that neuronal activity in the monkey PRR could predict:

A) an intended move to a spatial target.
B) a motor response to an auditory cue.
C) reward preference.
D) somatosensory thresholds.

Question 9

Which of the following is a behavioral phenomenon BEST associated with parietal lobe damage?

A) achromatopsia
B) anosmia
C) prosopagnosia
D) asomatagnosia

Question 10

The ability to do arithmetic, mentally rotate and manipulate an object, and accurately reach for a moving object all depend on representation of:

A) object categories in the anterior parietal cortex.
B) object categories in the posterior parietal cortex.
C) "mental space" in the anterior parietal cortex.
D) "mental space" in the posterior parietal cortex.

Question 11

One characteristic common to MOST posterior parietal neurons in the monkey brain is that they are responsive to _____.

A) movements of the animal's eyes or arms toward a stimulus
B) the shape of visual stimulus
C) being touched on the upper lip by a stimulus
D) changes in the color of a visual stimulus

Question 12

The lateral parietal lobe is demarcated ventrally by the _____.

A) cingulate gyrus
B) central fissure
C) Sylvian fissure
D) parietal-occipital fissure

Question 13

Activity within the human medial parietal region is important for:

A) spatial navigation ability.
B) discriminative touch.
C) object recognition.
D) guided reaching.

Question 14

The ability to voluntarily direct one's gaze to select environmental stimuli depends on connections between the _____ and the _____.

A) posterior parietal cortex; fusiform gyrus
B) primary motor cortex; anterior parietal cortex
C) frontal eye fields; anterior parietal cortex
D) frontal eye fields; posterior parietal cortex

Question 15

A patient who is only able to pay attention to one object at a time and misreaches for things nearby is MOST likely suffering from:

A) Balint's syndrome.
B) amorphosynthesis.
C) allesthesia.
D) Gerstmann syndrome.

Question 16

The parietal reach region (PRR) is involved in:

A) visual guidance of grasping motions.
B) control of saccadic eye movements.
C) tactile guidance of grasping movements.
D) object-directed grasping motions.

Question 17

Cortical regions immediately posterior to the central sulcus are largely involved in:

A) controlling the level of cognitive arousal.
B) integrating visual perceptions with motion.
C) processing motor commands.
D) processing somatosensory information.

Question 18

The MOST posterior Brodmann area in the parietal lobe is area _____.

A) 39
B) 11
C) 43
D) 5

Question 19

The supramarginal gyrus and angular gyrus make up the:

A) superior parietal lobe.
B) inferior parietal lobe.
C) primary somatosensory cortex.
D) postcentral gyrus.

Question 20

Which of the following does NOT appear to receive significant cortical input from the parietal lobe?

A) the frontal lobe
B) the occipital lobe
C) the temporal lobe
D) the hippocampus

Question 21

Contralateral neglect is MOST likely a result of impaired:

A) working memory.
B) object recognition.
C) attention to one side of space.
D) behavioral inhibition.

Question 22

Which of the following is more likely to be seen in subjects with left parietal lobe lesions?

A) paper cutting disability
B) more mistakes in Weigl's sorting test
C) unilateral neglect
D) cube counting errors

Question 23

Which of the following is more likely to be seen in subjects with right parietal lobe lesions?

A) contralateral neglect
B) dyslexia
C) dyscalculia
D) ideomotor apraxia

Question 24

Performance on the _____ would be expected to be below average in a patient with damage to the left parietal lobe.

A) line bisection test
B) Mooney Closure Test
C) Token Test
D) bicycle drawing task
Answer Key

Question 25

Patients with left parietal lesions typically have difficulty distinguishing between:

A) up and down.
B) right and wrong.
C) red and green.
D) left and right.

Question 26

A person who, after a parietal lobe stroke, reports being touched on the right arm even though the touch was to the left arm is exhibiting:

A) allesthesia.
B) amorphosynthesis.
C) simultaneous extinction.
D) contralateral neglect.

Question 27

A patient who cannot identify her fingers nor complete arithmetic problems is MOST likely to be diagnosed with:

A) Balint's syndrome.
B) Kluver-Bucy syndrome.
C) Gerstmann syndrome.
D) allesthesia.

Question 28

The line bisection task is considered a sensitive test for diagnosing:

A) unimodal neglect.
B) contralateral neglect.
C) psychomotor poverty.
D) object agnosia.

Question 29

The first stage in recovery from contralateral neglect is termed _____.

A) extinction
B) reintegration
C) morphosynthesis
D) allesthesia

Question 30

A person with damage to the right parietal lobe would have the MOST difficulty recognizing a:

A) human face in a photograph.
B) human face seen in person.
C) house seen from the front yard.
D) house from an aerial view.

Question 31

According to Posner, an important contribution of the parietal lobes to attentional processes is disengagement, which is the ability to:

A) end long-term relationships.
B) focus attention on a specific stimulus.
C) shift attention from one stimulus to another.
D) avoid paying attention to environmental stimuli.

Question 32

The two - point discrimination test would be MOST sensitive to damage to the:

A) anterior parietal lobe.
B) posterior parietal lobe.
C) parieto-occipital junction.
D) temporo-occipital junction.