Question 1

The 1965 monograph, "Disconnexion Syndromes in Animals and Man," reintroduces a concept introduced many years before by:

Accepted Answer

A)  Geschwind. 
B)  Sperry and Gazzaniga. 
C)  Kimura and Hampson. 
D)  Dejerine and Liepmann. 
A)  Geschwind. 
B)  Sperry and Gazzaniga. 
C)  Kimura and Hampson. 
D)  Dejerine and Liepmann. D

Question 2

Imaging studies of subject M.C. have shown that, following callosotomy, there is _____ to the site of sensory stimulation.

Accepted Answer

A)  increased neural activity ipsilateral 
B)  increased neural activity contralateral 
C)  decreased neural activity ipsilateral 
D)  decreased neural activity contralateral 
A)  increased neural activity ipsilateral 
B)  increased neural activity contralateral 
C)  decreased neural activity ipsilateral 
D)  decreased neural activity contralateral C

Question 3

The single region of the rhesus monkey brain that does NOT have many interhemispheric connections is the:

Accepted Answer

A)  insular cortex. 
B)  dorsolateral prefrontal cortex. 
C)  primary visual cortex. 
D)  Wernicke's area. 
A)  insular cortex. 
B)  dorsolateral prefrontal cortex. 
C)  primary visual cortex. 
D)  Wernicke's area. C

Question 4

On which of the following tasks would you expect to see the LEAST impairment following hemispheric disconnection?

Accepted Answer

A)  puzzle assembly 
B)  dichotic listening 
C)  tactile apperception 
D)  chimeric face perception 
A)  puzzle assembly 
B)  dichotic listening 
C)  tactile apperception 
D)  chimeric face perception

Question 5

The MOST posterior portion of the corpus callosum is called the:

Accepted Answer

A)  splenium. 
B)  genu. 
C)  uncinate. 
D)  rostrum. 
A)  splenium. 
B)  genu. 
C)  uncinate. 
D)  rostrum.

Question 6

The lesion MOST associated with hemispatial neglect is the:

Accepted Answer

A)  gray matter of the right posterior parietal cortex. 
B)  gray matter of the left posterior parietal cortex. 
C)  white matter of the right posterior parietal cortex 
D)  white matter of the left posterior parietal cortex. 
A)  gray matter of the right posterior parietal cortex. 
B)  gray matter of the left posterior parietal cortex. 
C)  white matter of the right posterior parietal cortex 
D)  white matter of the left posterior parietal cortex.

Question 7

According to Geschwind's disconnection theory, bilateral apraxia occurs when there is a disconnection of:

Accepted Answer

A)  auditory and speech areas in the left hemisphere. 
B)  motor and speech areas in the left hemisphere. 
C)  motor and auditory areas in the right hemisphere. 
D)  motor and speech areas in the right hemisphere. 
A)  auditory and speech areas in the left hemisphere. 
B)  motor and speech areas in the left hemisphere. 
C)  motor and auditory areas in the right hemisphere. 
D)  motor and speech areas in the right hemisphere.

Question 8

Olfactory information crosses from one hemisphere to the other via the:

Accepted Answer

A)  corpus callosum. 
B)  olfactory commissure. 
C)  anterior commissure. 
D)  hippocampal commissure 
A)  corpus callosum. 
B)  olfactory commissure. 
C)  anterior commissure. 
D)  hippocampal commissure

Question 9

A subject with damage to the anterior commissure would be impaired on a task examining interhemispheric transfer of:

Accepted Answer

A)  visual stimuli. 
B)  tactile stimuli. 
C)  vestibular stimuli. 
D)  olfactory stimuli. 
A)  visual stimuli. 
B)  tactile stimuli. 
C)  vestibular stimuli. 
D)  olfactory stimuli.

Question 10

The only sensory system whose afferent fibers do NOT cross is:

Accepted Answer

A)  the olfactory system. 
B)  the auditory system. 
C)  the somatosensory system. 
D)  the vestibular system. 
A)  the olfactory system. 
B)  the auditory system. 
C)  the somatosensory system. 
D)  the vestibular system.

Question 11

Functionally, the visual system is entirely crossed, such that stimuli in the left - visual field are initially processed by the right - visual cortical areas and vice versa. Which of the following systems is MOST similar to vision in this regard?

Accepted Answer

A)  audition 
B)  somatosensory 
C)  olfaction 
D)  taste 
A)  audition 
B)  somatosensory 
C)  olfaction 
D)  taste

Question 12

Damage to the splenium of the corpus callosum would MOST probably result in:

Accepted Answer

A)  loss of bimanual coordination. 
B)  nonfluent aphasia. 
C)  visual agnosia. 
D)  acopia. 
A)  loss of bimanual coordination. 
B)  nonfluent aphasia. 
C)  visual agnosia. 
D)  acopia.

Question 13

In those individuals who undergo a callosal transection, which of the following is TRUE?

Accepted Answer

A)  Ipsilateral pathways may become stronger in younger patients. 
B)  Ipsilateral pathways are enhanced regardless of the age at transection. 
C)  New contralateral pathways are formed in younger patients. 
D)  New contralateral pathways can be generated at any age. 
A)  Ipsilateral pathways may become stronger in younger patients. 
B)  Ipsilateral pathways are enhanced regardless of the age at transection. 
C)  New contralateral pathways are formed in younger patients. 
D)  New contralateral pathways can be generated at any age.

Question 14

Compared with individuals commissurotomized in adulthood, subjects with agenesis of the corpus callosum:

Accepted Answer

A)  show virtually the same behavioral patterns. 
B)  have difficulty with interhemispheric transfer of complex stimuli. 
C)  show no differences from normal, intact subjects. 
D)  have more right-hemisphere language localization than the general population. 
A)  show virtually the same behavioral patterns. 
B)  have difficulty with interhemispheric transfer of complex stimuli. 
C)  show no differences from normal, intact subjects. 
D)  have more right-hemisphere language localization than the general population.

Question 15

Most projections of the corpus callosum are:

Accepted Answer

A)  organized topographically and project ipsilaterally. 
B)  diffusely distributed and project contralaterally. 
C)  organized topographically and project contralaterally. 
D)  organized homotopically and project subcortically. 
A)  organized topographically and project ipsilaterally. 
B)  diffusely distributed and project contralaterally. 
C)  organized topographically and project contralaterally. 
D)  organized homotopically and project subcortically.

Question 16

Damage to the body (middle region) of the corpus callosum would MOST likely impair a subject's ability to:

Accepted Answer

A)  match left and right limb position with eyes closed. 
B)  use external cues to control impulsive behavior. 
C)  read aloud words presented selectively to the right hemisphere. 
D)  name an odor presented to the right nostril. 
A)  match left and right limb position with eyes closed. 
B)  use external cues to control impulsive behavior. 
C)  read aloud words presented selectively to the right hemisphere. 
D)  name an odor presented to the right nostril.

Question 17

Impairments in bimanual coordination following hemispheric disconnection appeared to be reduced when subjects performed actions that required:

Accepted Answer

A)  a high degree of conscious control. 
B)  a minimal degree of conscious control. 
C)  manipulation of household objects. 
D)  new stimulus-response learning. 
A)  a high degree of conscious control. 
B)  a minimal degree of conscious control. 
C)  manipulation of household objects. 
D)  new stimulus-response learning.

Question 18

Mishkin and his colleagues have extended the study of cortical disconnection to:

Accepted Answer

A)  animal models using monkeys. 
B)  human split-brain subjects. 
C)  animal models using rats and mice. 
D)  computer simulations of behavior. 
A)  animal models using monkeys. 
B)  human split-brain subjects. 
C)  animal models using rats and mice. 
D)  computer simulations of behavior.

Question 19

A patient with a complete transection of the corpus callosum would have particular difficulty proficiently:

Accepted Answer

A)  writing a letter using a pencil or pen. 
B)  using a canoe paddle. 
C)  using a gaming console. 
D)  pouring coffee into a cup. 
A)  writing a letter using a pencil or pen. 
B)  using a canoe paddle. 
C)  using a gaming console. 
D)  pouring coffee into a cup.

Question 20

Those areas of the monkey neocortex that receive the densest interhemispheric connections are those that:

Accepted Answer

A)  are phylogenetically oldest. 
B)  are most commonly damaged by trauma, stroke, etc. 
C)  represent the lateral portions of the body. 
D)  represent the midline portions of the body. 
A)  are phylogenetically oldest. 
B)  are most commonly damaged by trauma, stroke, etc. 
C)  represent the lateral portions of the body. 
D)  represent the midline portions of the body.

Exam 17: Extension: A - Cortical Networks and Disconnection Syndromes

The 1965 monograph, "Disconnexion Syndromes in Animals and Man," reintroduces a concept introduced many years before by:

Imaging studies of subject M.C. have shown that, following callosotomy, there is _____ to the site of sensory stimulation.

The single region of the rhesus monkey brain that does NOT have many interhemispheric connections is the:

On which of the following tasks would you expect to see the LEAST impairment following hemispheric disconnection?

The MOST posterior portion of the corpus callosum is called the:

The lesion MOST associated with hemispatial neglect is the:

According to Geschwind's disconnection theory, bilateral apraxia occurs when there is a disconnection of:

Olfactory information crosses from one hemisphere to the other via the:

A subject with damage to the anterior commissure would be impaired on a task examining interhemispheric transfer of:

The only sensory system whose afferent fibers do NOT cross is:

Functionally, the visual system is entirely crossed, such that stimuli in the left - visual field are initially processed by the right - visual cortical areas and vice versa. Which of the following systems is MOST similar to vision in this regard?

Damage to the splenium of the corpus callosum would MOST probably result in:

In those individuals who undergo a callosal transection, which of the following is TRUE?

Compared with individuals commissurotomized in adulthood, subjects with agenesis of the corpus callosum:

Most projections of the corpus callosum are:

Damage to the body (middle region) of the corpus callosum would MOST likely impair a subject's ability to:

Impairments in bimanual coordination following hemispheric disconnection appeared to be reduced when subjects performed actions that required:

Mishkin and his colleagues have extended the study of cortical disconnection to:

A patient with a complete transection of the corpus callosum would have particular difficulty proficiently:

Those areas of the monkey neocortex that receive the densest interhemispheric connections are those that:

Extension: A - The Development of Neuropsychology

Extension: B - The Development of Neuropsychology

Extension: C - The Development of Neuropsychology

Extension: A - Research on the Origins of the Human Brain and Behavior

Extension: B - Research on the Origins of the Human Brain and Behavior

Extension: C - Research on the Origins of the Human Brain and Behavior

Extension: A - Nervous System Organization

Extension: B - Nervous System Organization

Extension: C - Nervous System Organization

Extension: A - the Structure and Electrical Activity of Neurons

Extension: B - the Structure and Electrical Activity of Neurons

Extension: C - the Structure and Electrical Activity of Neurons

Extension: A - Communication Between Neurons

Extension: B - Communication Between Neurons

Extension: C - Communication Between Neurons

Extension: A - The Influence of Drugs and Hormones on Behavior

Extension: B - The Influence of Drugs and Hormones on Behavior

Extension: C - The Influence of Drugs and Hormones on Behavior

Extension: A - Imaging the Brains Activity

Extension: B - Imaging the Brains Activity

Extension: C - Imaging the Brains Activity

Extension: A - Organization of the Sensory Systems

Extension: B - Organization of the Sensory Systems

Extension: C - Organization of the Sensory Systems

Extension: A - Organization of the Motor System

Extension: B - Organization of the Motor System

Extension: C - Organization of the Motor System

Extension: A - Principles of Neurocortical Function

Extension: B - Principles of Neurocortical Function

Extension: C - Principles of Neurocortical Function

Extension: A - Cerebral Asymmetry

Extension: B - Cerebral Asymmetry

Extension: C - Cerebral Asymmetry

Extension: A - Variations in Cerebral Asymmetry

Extension: B - Variations in Cerebral Asymmetry

Extension: C - Variations in Cerebral Asymmetry

Extension: A - The Occipital Lobes

Extension: B - The Occipital Lobes

Extension: C - The Occipital Lobes

Extension: A - The Parietal Lobes

Extension: B - The Parietal Lobes

Extension: C - The Parietal Lobes

Extension: A - The Temporal Lobes

Extension: B - The Temporal Lobes

Extension: C - The Temporal Lobes

Extension: A - The Frontal Lobes

Extension: B - The Frontal Lobes

Extension: C - The Frontal Lobes

Extension: B - Cortical Networks and Disconnection Syndromes

Extension: C - Cortical Networks and Disconnection Syndromes

Extension: A - Learning and Memory

Extension: B - Learning and Memory

Extension: C - Learning and Memory

Extension: A - Language

Extension: B - Language

Extension: C - Language

Extension: A - Emotion and the Social Brain

Extension: B - Emotion and the Social Brain

Extension: C - Emotion and the Social Brain