PSYB51H3 Chapter Notes - Chapter 6: Abducens Nerve, Superior Rectus Muscle, Medial Rectus Muscle
Document Summary
Spatial vision light coming from different angles on the retina. Why do we talk about eye movements in a course on perception: helps get a full picture of perception, helps sends signals (e. g. , eye roll) Our retinas are curved, 2d projection surfaces with foveae. The brain creates a 3d image from the projections. Our retinas require eye movements and require 3d information to be recovered from flattened and distorted images. 3 rotational axis horizontal, vertical, circular motion. 6 muscles are attached to each eye and are arranged in three pairs. Superior oblique goes through a trochlear (opening in bone structure) 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. Vergence eye movements: type of eye movement in which two eyes move in opposite directions (done deliberately: seeing images/objects near nose cross eyes, aligns retinal images.
