Cortical Localization of Function II Flashcards
What system is located on the banks of the calcarine fissure?
Primary visual cortex
The left visual field is represented on _
The lower visual field is represented on _
Central vision is represented on _
the right visual cortex
the dorsal bank
occipital pole
Small lesions of the primary visual cortex produce _ on where?
Scotomas
Opposite visual field
Large lesions of the primary visual field lead to _ or _
Quadrantopsia
Hemianopsia
The peristriate cortex forms the _, which consists of _ (2)
Secondary visual cortex
V2 and V3
The function of the V2 neurons of the secondary visual cortex is _
Respond to complex patterns
The funtion of the dorsal V3 is _
The function of the ventral V3 is _
Large scale motion
Object recognition
Visual perception and visuomotor functions are dependent on each other, true or false
False
At what point in the visual pathway do the ventral and dorsal stream develop
V3
The function of the ventral stream is _ (2)
Pattern / object recognition
Storage of visual information
The function of the dorsal stream is _ (2)
Placing objects in external space
Saccadic eye movements
The components of the secondary visual areas are _
V2 and V3
The visual association areas are _
V4 and V5
V4 projects to the posterior inferior temporal lobe. Its functions are split left and right. Its function on the left is _. Its function on the right is _
Left function is processing data associated with language (writing)
Right function is holistic, non-verbal recognition (e.g. faces)
Alexia and Agraphia are associated with lesions of _
Left posterior inferior temporal lobe
Visual form agnosia is associated with lesions of
occipito-temporal cortex
The visual ventral stream is associated with what association area?
V4
The dorsal stream is associated with what association area?
V5
The major function of V5 is
Assemblage of objects in visual space
The major symptom of Balint’s syndrome is _. It results in _
Simultanagnosia
Inability to focus on more than one thing at a time
Balint’s syndrome is caused by a lesion of . An example of an injury that can cause Balint’s syndrome is
Posterior parietal cortex (temporal-parietal-occipital junction)
Watershed stroke between MCA and PCA
The location of the primary auditory cortex is _. What lobe is it found on?
Heschl’s gyrus
Temporal lobe
The belt cortex functions as _ relative to the auditory cortex
Association cortex
The function of function of the left and right belt cortices are _
Left - decode temporal components of sound (sequence)
Right - decode spectral components (harmonics, pitch)
The location of Wernicke’s are is _
left posterior superior temporal gyrus
Damage to Wernicke’s area results in _
Sensory aphasia (inability to understand speech)
The corresponding area to Wernicke’s on the right is concerned with _
Prosody (humor, sarcasm)
The medial temporal lobe (parahippompus, amygdala, hippocampus) are critical for _
Memory formation
Emotion
Sexual behavior
The primary somatosensory cortex is located on what lobe?
Parietal lobe
The major thalamic inputs to the somatosensory cortex are from _
VPM
VPL
The locations of the detailed somatotopic map of the body is located on _. What side of the body does it represent?
Post central gyrus
Contralateral
Lesions of the post central gyrus result in _ (2)
Agraphesthesia (recog. writing on skin)
Asterognosis (know where being touched)
A characteristic of the _ somatosensory association areas is _
5
Contain crude homonculus
Damage to the dorsomedial association area leads to _
Construction apraxia (inability to draw, assemble blocks)
Damage to the ventromedial association area lead to _
Tactile agnosia (cannot recognize objects by touch)
The right inferior parietal lobe is involved with _
Self perception, position of body in external space
Damage to the right inferior parietal lobe leads to _
Hemispatial neglect (neglect of left side of body, neglect of left visual field)
The left inferior parietal lobe is involved with _
Language functions, verbal working memory
Damage to the left inferior parietal lobe results in _ (3)
Agraphia
Acalculia
Finger agnosia
A name for the medial parietal lobe is _. It is the last region to fully myelinate
Precuneus
