Number needed depends on the experiment TOP APPLICATION AREAS RESPONDENTS NEEDED $99 to $50,000 could have one! GREENLAND everyone in That means eye trackers in the world 45,000 There are at least Medium 0.5 degree High-end 0.1 degree Low-end 1.0 degree M E A S U R E M EN T P R E C I S I O N Saccadic movements usually span 7 to 9 characters along the line of text Typically up to 11 inches in each direction for eye trackers to pick up the eyes ≈ 95% of people can be tracked with an eye tracker MILLISECONDS 100-300 TYPICAL FIXATION DURATION LASTS M O B I L E A C L O S E R 2 MILLION 107 MILLION 17 TIMES AT EYE TRACKING Eyes come in all shapes and sizes, but size does not matter in eye tracking RESOLUTION The eye has a resolution of 576 megapixels. Equivalent to 72x iPhone 6 resolution. The world of eye tracking is fascinating and filled with advanced research, stunning discoveries and the wonders of the human eye. working parts light sensitive cells Contains On average you blink per minute Composed of over The Average Pupil is 2-4 MM in bright light to 4-8 MM in the dark The Average Eye is .9 inches tall 1 inch deep 1 inch wide L K S I Z E D O E S N ’ T M A T T E R ! Near-infrared light directed towards pupil Reflections in the cornea tracked by camera Know what people are looking at (probably cats) TYPES OF HARDWARE 1. 2. 3. S A C C A D I C M O V E M E N T S H E A D M O V E M E N T T R A CK A B I L I T Y R E M O T E SAMPLING RATE Typical value range: 30-60Hz Special research equipment: 120-1200+ Hz A C A D E M I C & S C I E N T I F I C M A R K E T I N G P S Y C H O L O G Y M E D I C A L U S A B I L I T Y P A C K A G I N G P C & G A M I N G H U M A N F A C T O R S & S I M U L A T I O N Used in a wide variety of research SPEED Peak angular speed during a saccade is 900°/s. That's 0.42 mph or 2x max speed of a Galapagos tortoise. MUSCLES 6 extraocular muscles control the eye movement. DISTANCE The farthest object visible to the human eye is the Andromeda Galaxy, 2.6 million light-years away. X72 HOW EYE TRACKING WORKS & PRICE RANGE THE EYE 6 Respondent positioned properly Eyes need to be visible Proper lighting conditions Keep distractions at a minimum TIPS FOR GOOD DATA t Was this infographic an eye-opener? Take an even closer look at eye tracking: https://imotions.com/blog/eye-tracking QUANTITATIVE: QUALITATIVE: 1 or more 30 is a general rule for statistical validity