2-5

• Transforming of stimulus energies into neural impulses our brain can interpret.
• EX. Your eyes recieve light that transduces into neural messages.

The dimension of color that is determined by the wavelength of light; what we know as color names like blue and green.

The adjustable opening in the center of the eye through which light enters

A ring of muscle tissue that froms the colored portion of the eye around the pupli and controls the size of the pupoil opening.

Transparent structure behind the pupil that changes shape to helep focus images on the retina. Used to bring objects into focus on retina.

Process where our sensory receptors and nervous system receive and represent stimulus energies from our environment.

Process of organizing and interpreting sensory info enabling us to recognize meaningful objects and events.

What stimuli can we detect? combining stimuli and our psychological perceptions

The principle that to be perceived as different 2 stimuli must differ by a constant minimum percentage rather than a constant amount.