Eye contact, gaze, pupil dilation, and blinking patterns
Maintaining direct eye contact for extended periods, typically 3-5 seconds or longer.
Deliberately avoiding eye contact by looking away, down, or to the side.
Significantly increased blink rate above the baseline of 15-20 blinks per minute.
Enlargement of the pupils beyond what lighting conditions would require.
Narrowing of the eyes by partially closing the eyelids, creating tension around the eye area.
Eyes opened wider than normal, with more white (sclera) visible.