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Vestibular system

Vestibular system. compiled by Dr. András Csillag. Crista ampullaris. Macula utriculi. Macula sacculi. Stimulus generation of macula utriculi. Ampullar hair cell response to movement of cupula. average spike frequency/cycle. Spike frequency / 3 cycles in a single cell.

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Vestibular system

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  1. Vestibular system compiled by Dr. András Csillag

  2. Crista ampullaris Macula utriculi Macula sacculi

  3. Stimulus generation of macula utriculi

  4. Ampullar hair cell response to movement of cupula average spike frequency/cycle Spike frequency / 3 cycles in a single cell After Dickman and Correia (1989).

  5. Spike frequency of ampullar afferents as a function of angular acceleration After Groen et al., (1952).

  6. Vestibular pathways Csillag A. Atlas of the Sensory Organs, Humana Press, 2005

  7. Afferents to vestibular nuclei

  8. Vestibulospinal pathways

  9. Vestibulo-thalamo-cortical pathways

  10. Cerebellar and vestibular inputs to spinal motoneurons

  11. Ocular movements – vestibular nystagmus

  12. Vestibulo-ocular reflex pathways Csillag A. Atlas of the Sensory Organs, Humana Press, 2005

  13. Horizontal und vertical gaze centers

  14. Frequent diseases of vestibular system Ménière syndrome Symptoms: Dizziness (vertigo) Nystagmus Nausea Postural disorder, loss of balance, sometimes tinnitus Origin: Increased pressure in endolymphatic space Neuritis vestibularis Symptoms: Loss of balance Nystagmus Tinnitus (murmur, humming tone in ear) Origin: viral infection, bacterial inflammation of sensory organ, vestibular nerve or labyrinth

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