The central sulcus which is on boundary with the frontal lobe
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What is the parieto-occipital fissure on boundary with?
Occipital lobe
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What is the lateral sulcus on boundary with?
Temporal lobe
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What is somatosensory cortex?
Between the central sulcus and post central sulcus
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What is the other two parts of the somatosensory cortex?
Superior parietal lobule and inferior parietal lobule
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What is the main role of the somatosensory cortex?
Processing information about body somatic sensations, pain, temperature, pressure, propioception (sensations about muscle movement and position), visceral sensation
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Sensations about different body areas are?
Localised in specific areas of the somatosensory cortex
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What is this mapping called?
Somatopy (Equivalent to retinotopy in the visual cortex)
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What did Dr Penfield do?
Inserted electrodes in the somatosensory cortex of epileptic patients just before operating them
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What did he stimulate?
Different parts of the somatosensory cortex and recorded the sensation the participants felt
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Some parts have a larger dedicated area than others, what is this called?
Homunculus
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What is the input?
Spinal cord --> Thalamus --> somatosensory cortex
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What is the output?
Motor cortex, posterior parietal areas
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What is a phantom limb?
Patient with arm amputation feels sensation of the missing arm when touched on the face
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What is this due to?
Somatosensory cortex reorganisation, cells in the arm region do not receive any input
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What do neighbouring face cells expand?
Their territory
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What happens when their face is touched?
Activation spreads into the arm region of the somatosensory cortex --> The brain interprets this as sensation coming from the arm
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What are the main roles of the superior parietal lobule?
Elaboration and integration of sensory information from the somato sensory cortex
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What does it maintain?
A representation of the body state that is used during voluntary or intentional limb movement
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What are the other roles?
Roles in attention
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What are the roles of the inferior parietal lobule/
multimodal sensory integration: 1) somatic sensation, visual sensation and auditory information, 2) calculation 3) LEFT Language (name retrieval and word reading) 4)Sense of self 5) RIGHT: direction of attention to objects
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What are the 2 language impairment diseases?
Brocas syndrome and Wernickes Syndrome
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What is broca syndrom?
Not fluent but comprehensive
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What is Wernicke's syndrome?
Comprehension deficit, fluent but wrong words
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What is the impairment of direction of attention to objects?
Hemispatial neglect, ignore the left side of the space, no damage to the visual system
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What can the parietal lobe also do?
Help shift attention when looking at a cue
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What are the 3 deficits of visuo motor coordination?
balints syndrome, Optic Ataxia (difficulty reaching), ocular apraxia (visual motor disturbance), simultanagnosia (difficulties seeing more than one object at once)
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Other cards in this set
Card 2
Front
What is the parieto-occipital fissure on boundary with?
Back
Occipital lobe
Card 3
Front
What is the lateral sulcus on boundary with?
Back
Card 4
Front
What is somatosensory cortex?
Back
Card 5
Front
What is the other two parts of the somatosensory cortex?
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