Notes 2-29-08 - Sensing the World Senses make an organism...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Sensing the World Senses make an organism adapted to its niche. We as human beings are sensitive to sound frequencies that represent the range of the human voice. Absolute threshold - absolute minimum sensory information needed to sense something Weber’s Law difference threshold gets bigger and bigger depending on the original stimuli. Sensing Stimulation and Differences Sensory adaptation : Diminished sensitivity as a consequence of constant stimulation. Put a band aid on your arm and after a while you don’t sense it. Sensing difference in stimulation depends on the starting level of the stimulation. Vision Transduction : in sensation, the formation of stimulus energy (sights, sounds, smells) into neural impulses. Wavelength : What determines our perception of color. Shorter: Violet. Longer: Red. Differenct wavelengths of light result in different perceived colors. Parts of the eye: 1. cornea 2. iris 3. lens: Transparent structure behind the pupil that changes shape to focus images on the retina. 4.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online