PSYB57H3 Chapter Notes - Chapter 6: Saccade, Binocular Vision, Inferior Rectus Muscle
Document Summary
6 muscles are attached to each eye and are arranged in three pairs. Controlled by 3 cranial nerves: oculomotor nerve (3): inferior rectus, inferior oblique, medial rectus, and superior rectus, troclear nerve (4): superior oblique, abducens nerve (6): lateral rectus. Extensive network: frontal eye fields and parietal cortex, superior colliculus: structure in midbrain that plays important role in initiating and guiding eye movements, when stimulated with electrical signals, eye movements can be observed. Eye movements: smooth pursuit: eyes move smoothly to follow moving object, watching a car move. Fovea is kept on the object of interest: saccade: rapid movement of eyes that change fixation from one object or location to another, reading texts. Move fovea to object of interest, move as quickly as possible to reduce travel time during which vision is blurred. Yarbus (1967): scanpaths reveal intentions and interests, notches reveal fixations.
