Sensation and perception are essentially the same process.
Difference thresholds for the various senses are fairly close to being the same for all people.
The receptor cells for vision are located on the cornea of each eye.
A person walking through the woods at night is primarily reliant on cones for vision.
The fovea is a tiny spot on the retina that is also some times referred to as the "blind spot."
The visual fibers from the right half of each retina go to the left hemisphere.
Most people who are color-blind see no color, only black, white and shades of gray.
Women are more likely to be color blind than are men.
People who are color blind generally have the most difficulty distinguishing shades of blue.
Pitch is measured in hertz and loudness is measured in decibels.
The ear drum is part of the middle ear.
Humans are not capable of hearing tones above 1,000 Hz.
Studies suggest that loss of sense of smell is strongly associated with developing dementia.
Your ability to associate odors with memories peaks at the age of 40.
The five basic tastes are spatially distributed over different areas of the tongue without any overlap.
So-called "supertasters" are much more likely than average people to be obese because of their increased sensitivity to food.
Research has shown that massage helps premature babies grow and develop, indicating that the "power of touch" begins early in life.
Some people can undergo surgery while under hypnosis and feel little or no pain.
If you were blindfolded and had no visual or other external cues, you would not be able to sense motion once your speed reached a constant rate.
Motion parallax can cause you to sense motion even when there is none.