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Chapter 34
Functions of the Neocortex
49
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Undergraduate 3
12/06/2015

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Term
4 places where brain activity increases when a person is asked to imagine they are walking from one place to another
Definition
1. extrastriate visual areas
2. posterior parietal cortex
3. temporal lobe
4. prefrontal areas
Term
Does solving a mathematical problem activate brain areas more similarly to spatial tasks or verbal tasks?
Definition
spatial
Term
2 places where the posterior parietal cortical areas have a lot of connections
Definition
1. cingulate gyrus
2. prefrontal cortex
Term
3 things that area 5 is essential for
Definition
1. proper use of somatosensory information
2. goal-directed voluntary movements
3. manipulation of objects
Term
3 things that area 7 is essential for
Definition
1. integration of visual & somatosensory stimuli
2. coordination of the eye & the hand (visual guidance of movements)
3. control of eye movements
Term
What is the posterior parietal cortex important for?
Definition
the intention to move (contains a "map of intentions")
Term
apraxia
Definition
inability to use well-known tools & objects
Term
When does task-related increase in firing frequency occur?
Definition
when a stimulus is relevant & the attention is directed toward the stimulus
Term
Do cells that respond to stimulation of proprioceptors respond more vigorously when a movement is self-initiated or when a joint is passively manipulated by someone else?
Definition
self-initiated
Term
What makes up the "association cortex"?
Definition
the parts of the frontal lobe in front of areas 6 & 8
Term
4 places the prefrontal areas receive strong afferent connections from
Definition
1. occipital lobe
2. parietal lobe
3. temporal lobe
4. cingulate gyrus
Term
2 places the mediodorsal nucleus (MD) of the thalamus gets afferents from
Definition
1. amygdala
2. ventral pallidum
Term
5 places the prefrontal cortex sends efferents to
Definition
1. SMA
2. PMA
3. caudate nucleus of the striatum
4. amygdala
5. hypothalamus
Term
6 things the prefrontal cortex is crucial for
Definition
1. planning & initiation of goal-directed behavior
2. attention
3. selection of a specific behavior among several possibilities
4. suppression of unwanted behavior
5. memory (working memory & long-term establishment of memory traces)
6. learning of rules by association
Term
What part of the brain is crucial for social adaptation?
Definition
the prefrontal cortex
Term
How can prefrontal lesions be distinguished from lesions of other parts of the cortex?
Definition
changes of mood & personality
Term
How is the ability to alter the behavior on the basis of experience from previous actions affected by prefrontal lesions?
Definition
it is reduced
Term
What is the difference in the connections of the superior temporal gyrus & the inferior part of the temporal lobe (inferotemporal cortex)?
Definition
superior = auditory cortex

inferior = processed visual information from the extrastriate visual areas
Term
What results from electrical stimulation of the temporal association cortex?
Definition
recall of memories of past events or the experience of dreamlike sequences of imagined events
Term
What is the inferotemporal cortex especially important for?
Definition
categorization of visual stimuli
Term
Do neurons in the inferotemporal cortex respond preferentially to specific visual stimuli (such as a face VS a hand)?
Definition
yes!
Term
prosopagnosia
Definition
selective loss of face recognition; occurs after lesions of the temporal lobe
Term
What is the fusiform gyrus of the inferotemporal cortex associated with?
Definition
face recognition in humans
Term
What is the medial temporal lobe important for?
Definition
learning & declarative memory
Term
What are lateral parts of the temporal lobe necessary for?
Definition
semantic memory (knowledge about facts, meaning of words, objects, etc.)
Term
What does bilateral damage of the temporal lobe result in?
Definition
amnesia
Term
What are typical results of a temporal lobe lesion in the inferotemporal cortex?
Definition
visual agnosia
Term
binding
Definition
how various bits of information represented in different parts of the cortex are integrated in the brain
Term
aphasia
Definition
loss of speech due to a brain lesion
Term
What do commissural connections ensure?
Definition
that information reaching one hemisphere also reaches the other & that commands issued to lower parts of the brain also are known to both hemispheres
Term
Is the temporal plane in the vicinity of the auditory cortex more extensive on the left or on the right side?
Definition
left
Term
How are the commissural fibers organized within the corpus callosum?
Definition
topographically
Term
What do ample commissural fibers allow the two hemispheres to do?
Definition
specialize
Term
dichotomania
Definition
the urge to equate the many examples of duality in human nature with the two halves of the brain
Term
What is the left hemisphere better at VS the right hemisphere?
Definition
left = analytical & logical thinking as expressed verbally & in numbers

right = spatial abilities, the comprehension of complicated patterns, & drawing
Term
What does it mean that one hemisphere is "dominant" for a function whereas the other is "recessive"?
Definition
when one hemisphere is most important for a certain function
Term
prosody
Definition
the modulation & melody of the sounds of speech; largely depends on the right hemisphere
Term
Which hemisphere is thought to be more important with regard to the ability to appreciate & express music?
Definition
right
Term
Which hemisphere is more important for perception of a melody?
Definition
right
Term
Which hemisphere is more important for listening to rhythm?
Definition
left
Term
2 parts of the brain activated when imagining a familiar tune?
Definition
1. right auditory cortex
2. frontal regions (both sides)
Term
3 things the supplementary motor area is important for
Definition
1. rhythmic movements
2. sequential movements
3. imagining tunes
Term
Which hemisphere is more important for the expression of emotions?
Definition
right
Term
Why are patients with strokes affecting the left hemisphere more likely to become depressed than patients with strokes in the right hemisphere?
Definition
because the right hemisphere understands the agony of the left
Term
Do men or women generally perform better on spatial tasks?
Definition
men
Term
Do men or women generally perform better on tasks that require verbal fluency, perceptual speed, & fine motor skills?
Definition
women
Term
Do men or women generally have a 10% heavier brain?
Definition
men
Term
Do men or women generally have a larger temporal plane?
Definition
women
Term
Do men or women generally have a higher cortical neuron density?
Definition
men
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