The Somatic Sensory System - Pain
6 important questions on The Somatic Sensory System - Pain
With the disorder agnosia, what area of the brain is damaged and what are the symptoms?
With agnosia comes the inability to recognize objects even though simple sensory skills seem to be normal.
What causes neglect syndrome and what are the symptoms?
In addition to mechanosensitive receptors, what is the role of nociceptors?
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Within the spinal cord, there is substantial mixing of information from two sources of input, resulting in referred pain. What is this phenomenon and how is its cause?
Now visceral nociceptor activation is perceived as a cutaneous sensation. Classic example: angina --> pain is perceived to the upper chest wall and left arm.
What kind of effect has electrical stimulation of the periaqueductal gray matter (PAG) and where is it located?
Stimulation causes analgesia.
What is the effect of opioids in the brain?
Endorphine containing neurons in the spinal cord and brain stem prevent the passage of nociceptive signals through the dorsal horn and into higher levels of the brain.
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