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10 Cards in this Set
- Front
- Back
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Describe Neglect
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The failure to report, respond, or orient to novel or meaningful stimuli presented to the side opposite a brain lesion, when this failure cannot be attributed to either sensory or motor defects
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What is Neglect not?
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It is not a disorder of the primary perceptual system
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What are symptoms and characteristics of neglect?
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Behave as it one half of space is non-existent
fails to orient to stimuli in one half of space fail to acknowledge or copy drawings on half of page in front of them fail to read or write one half of a sentence shave/dress half of their body eat food only half of or tray or plate |
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Why is Left-Hemi Field Neglect more Common?
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Neglect is more common in patients with lesions/damage in right hemisphere
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How can you test for Neglect?
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Line Bisection tasks
Clock drawings general figure drawings Letter cancellation tasks Writing |
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What are the three Mechanisms Underlying Neglect?
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Disorders of Attention
Disorder of Action or Intention Disorder of Internal (mental) representation of space) |
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With Disorders of Attention, how are the different parts of the brain involved.
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-Brain Stem, thalamus, cortex linked, create a circuit that modulates attention
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What does the Brian Stem do relating to the attentional mechanism
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Brain Stem (Reticular Activating System)
Regulates attentional tone during wakefulness Directs shift from sleep to wakefulness |
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What does the Thalamus do relating to the attentional mechanism
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Receives brain stem input, relays to parts of cortex
Plays a crucial role in arousal |
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What does the Prefrontal cortex do relating to the attentional mechanism
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Differential tuning of attention across multimodal sensory input.
Important in regulating overall attentional tone |
