Gaze (physiology)

Gaze (physiology)

The term gaze is frequently used in physiology to describe coordinated motion of the eyes and neck. The lateral gaze is controlled by the paramedian pontine reticular formation (PPRF).[1] The vertical gaze is controlled by the rostral interstitial nucleus of medial longitudinal fasciculus and the interstitial nucleus of Cajal.

Conjugate gaze

The conjugate gaze is the motion of both eyes in the same direction at the same time, and conjugate gaze palsy refers to an impairment of this function. The conjugate gaze is controlled by four different mechanisms:[2]

  • the saccadic system that allows for voluntary direction of the gaze
  • the pursuit system that allows the subject to follow a moving object
  • the optokinetic system that restores gaze despite movements of the outside world
  • the vestibulo-ocular reflex system (VOR system) that corrects for the movements of the head to preserve the stable visual image of the world

References

  1. ^ "Neural Control of Saccadic Eye Movements -- Neuroscience -- NCBI Bookshelf". http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi?book=neurosci&part=A1360. Retrieved 2009-11-29. 
  2. ^ Fowler, Timothy J.; John W. Scadding (2003). Clinical Neurology (3rd ed.). Arnold. ISBN 0340807989. 

External links

v · d · eSensory system: Visual system and eye movement pathways
Visual perception
1° (Bipolar cell of Retina) → 2° (Ganglionic cell) → 3° (Optic nerve → Optic chiasm → Optic tract → LGN of Thalamus) → 4° (Optic radiation → Cuneus and Lingual gyrus of Visual cortex → Blobs → Globs)
Muscles of orbit
Tracking
Horizontal gaze
Vertical gaze
Pupillary reflex
Pupillary dilation
Circadian rhythm

M: EYE

anat(g/a/p)/phys/devp/prot

noco/cong/tumr, epon

proc, drug(S1A/1E/1F/1L)



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