September 8 Chapter 6 Sensations and Perceptions

September 8 Chapter 6 Sensations and Perceptions -...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
September 8, 2005 Sensation and Perception The interface in the body is designed to turn physical sensations into electrical signals so your body can detect it The nose is capable of differentiating 40,000 smells Transduction : converts one form of energy into another In our body, these transducers are receptors Occurs at the receptor level Human ear is only able to hear up to 20 khz Adaptation occurs at the receptor level Ex. Optical Illusion Absolute threshold : the minimum physical energy necessary to activate a given sensory system 50% of the time The threshold of the eye to pick up light changes in bulbs is 60 Hz Absolute thresholds change with your arousal level The way we compute an absolute threshold is with ascending and descending units Ascending Limits is starting low and working high up to the threshold Descending Limits start high where you can notice it and work down to where you detect it 50% of the time Vision The stimulus for vision is electromagnetic wavelength
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

September 8 Chapter 6 Sensations and Perceptions -...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online