Reticular System -Bales Flashcards
What will result from damage to the dorsal raphe nucleus?
hyperactivity of cortex
What will result from damage to the Raphe magnus nucleus?
hypersensitivity to pain (hyperalgesia)
What is Ondine’s curse?
Brainstem lesion resulting in a loss of autonomic breathing but not voluntary breathing (loss of reticular input to the phrenic nuclei but not CST (voluntary) input)
What breathing pattern will you see with a lesion to the bilateral cortex?
cheyne-strokes breathing
What breathing pattern will you see with a lesion to the midbrain?
central neurogenic hyperventilation (loss of pneumotaxic center)
What breathing pattern will you see with a lesion to the pons?
apneustic breathing
deep inspiration–> hold –> normal exhalation
What breathing pattern will you see with a lesion to the upper medulla?
cluster breathing
What breathing pattern will you see with a lesion to the lower medulla?
ataxic breathing (not regulated)
What is normal breathing called?
eupnea
Where is the major source of NE to the cortex?
locus ceruleus
What are the rostral neurons of the RF (reticular activating system) responsible for?
What would a lesion to the rostral neurons of the RF cause?
arousal and attention functions
hypersomnia /coma
What are the caudal RF neurons responsible for?
what would a lesion to the caudal RF neurons cause?
vegetative and reflexive functions
insomnia
What is the major input of the reticular formation?
lateral zone
What is the major output of the reticular formation?
medial and raphe zones
What is the role of the preBotiznger complex?
generates rhythm
