1. 1. The point at which a stimulus can be detected
50% of the times presented.
Just Noticeable Difference
Difference Threshold
Absolute Threshold
Perception

2. 2. Any aspect of change in the environment the which an
organism responds.
Stimulus
Sensation
Perception
JND

3. 3. When the strength of a stimulus is below
someone’s absolute threshold, it is called
Supraliminal
Subliminal
Sensory experience
Perception

4. 4. The organization of sensory information into
meaningful experiences.
Sensation
Just Noticeable Difference
Stimulus
Perception

5. 5. When your sensory receptors adapt to the
constant sensations, it is called…
Signal Detection Theory
Sensory Adaptation
Perception
Sensation

6. 6. The idea that there is no absolute threshold for
everyone, and individual thresholds differ based upon
many factors is from…
Signal Detection Theory
Sensory Adaptation
Perception
Sensation

7. 7. This terms refers to your ability of the brain to take in outside information and recognize it based upon previous knowledge and experience.
Sensation
Perception
Threshold
Adaptation

8. 8. Sensory receptors sending information to the brain is called a…
Sensation
Perception
Threshold
Adaptation

9. Vision Vision is the most studied of all of the senses.
Who believes it is the most important??
Introduction Video

10. Light Light is a form of electromagnetic radiation.
There is a large spectrum of electromagnetic radiation, and only a small sliver of it is visible to the human eye.
The color of an object we see depends upon what types of light the object reflects.

11. Electromagnetic Spectrum

12. Frequency of Light Waves

13. Amplitude of Light

14. Frequency and Amplitude
Lower frequencies are warmer colors
Red, yellow, and orange
Higher frequencies are cooler colors
Violet, blue, and green
High amplitudes are vivid colors
Low amplitudes are pale/weak colors

15. Anatomy of the Eye

16. Group Activity Split up randomly into groups of 3
Each member in the group will get receive three handouts with parts of the eye.
You will teach each other as a group the parts of the eye and fill out the boxes in your handout with the name of the part of the eye and its function.
Video

17. Definitions Pupil Lens Retina Vitreous Humor
the opening in the iris that regulates the amount of light entering the eye.
Lens
A flexible, elastic, transparent structure in the eye that changes its shape to focus light on the retina.
Retina
The innermost coating of the back of the eye, containing light-sensitive receptor cells
Vitreous Humor
The transparent jellylike tissue filling the eyeball behind the lens.

18. Definitions Optic Nerve
The nerve that carries impulses from the retina to the brain
Fovea
Area on the retina with the highest proportion of cone receptors, and responsible for central vision.
Cornea
The transparent layer forming the front of the eye.
Iris
A flat, colored, ring-shaped membrane behind the cornea of the eye, with an adjustable circular opening (pupil) in the center.

19. Accommodation
When your lens changes its shape in order to focus upon an object.
Nearsightedness
Having difficulty seeing objects far away
Farsighted
Having difficulty seeing object near
Pencil Activity

21. Rods and Cones
Light-sensitive receptor cells, located within the retina.
Responsible for transduction, the process of taking the physical stimulus of light and turning into electrical signals sent to the brain.
Send the electrical signals through the optic nerve to the occipital lobe.

22. Cones Rods Responsible for color vision Located on or near the fovea
6-7 million within each eye
Work the best in daylight
Responsible for twilight vision
Located in the periphery of the retina.
Around 120 million in each eye
Work the best in darkness
Marker Activity

24. Blue Man Group