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The others are pupil dilation, eye movement, blinking, and gaze direction. There are four aspects involved with oculesics: [6] ... can indicate that a person is lying.
Eye movement can be classified according to two systems: the involvement of one or both eyes; involving one eye they may be classified as duction, and both eyes either version, if moving in the same direction, or vergence, if moving in opposite directions. [9] [10] fixational, gaze-stabilizing, or gaze-shifting.
When in lying position, the body may assume a great variety of shapes and positions. The following are the basic recognized positions: Supine position: lying on the back with the face up; Prone position: lying on the chest with the face down ("lying down" or "going prone") Lying on either side, with the body straight or bent/curled forward or ...
Listing's law, named after German mathematician Johann Benedict Listing (1808–1882), describes the three-dimensional orientation of the eye and its axes of rotation. Listing's law has been shown to hold when the head is stationary and upright and gaze is directed toward far targets, i.e., when the eyes are either fixating, making saccades, or pursuing moving visual targets.
Eye contact occurs when two people or non-human animals look at each other's eyes at the same time. [1] In people , eye contact is a form of nonverbal communication and can have a large influence on social behavior .
A conjugate eye movement is a movement of both eyes in the same direction to maintain binocular gaze (also referred to as “yoked” eye movement). This is in contrast to vergence eye movement, where binocular gaze is maintained by moving eyes in opposite directions, such as going “cross eyed” to view an object moving towards the face.
Here's how to distinguish "sundowning"—agitation or confusion later in the day in dementia patients—from typical aging, from doctors who treat older adults.
Hering's window demonstration of his law of visual direction. Both eyes fixate a point on the window. The right eye sees Captain Haddock's curses book behind the fixation, the left eye sees the French press behind the fixation point. With both eyes open and fixating the book and the French press appear superimposed and straight ahead.