Exam 4: A: Sensation and Perception

Your ability to detect an extremely weak stimulus varies depending on circumstances.​

Pain activates two brain areas,one that is responsible for sensation and one that is related to _________.​

Sound waves with greater amplitude are perceived as having a higher pitch than sound waves with lower amplitude.​

The optic nerve exits from the retina at the ____________________.​

If two people rate the intensity of a taste as "7" on a 1-to-7 scale,can we conclude that they both had an equally intense experience? Why or why not?​

The pitch of a sound (for example,high C or E-flat)depends on the ____________________ of the sound waves.​

Some people report continuing sensations,including pain,in a limb long after it has been amputated.This phenomenon is known as ___________ limb.​

You can detect faint light best in the center of your retina.​

Because all the axons exit from the eye at the same place,everyone has a blind spot.​

Define and differentiate trichromatic theory and the opponent-process theory.Which theory most easily explains negative color afterimages?​

Gestalt psychologists pioneered the study of feature detectors.​

When the moon looks larger at the horizon than it does high in the sky,it is just an optical illusion.The image is actually the same size.​

Describe differences between vision in the fovea and vision in the periphery of the eye.​

Suppose we are trying to measure someone's ability to detect weak stimuli.When we present extremely weak stimuli (sights,sounds,or touches),this person almost always reports that they were present.Before we draw any conclusions about this person's apparently great sensitivity,what else do we need to know?​

The analysis of how people make hits,misses,false alarms,and correct rejections is known as _______ ______ theory.​

We localize sounds by comparing the responses of the two ears.​

A participant is asked to report every time he or she sees a faint light.If rewards are offered for correctly reporting the presence of the light,but no punishment for reporting it when it is absent,the participant will make many hits but also many ____________________.​

On other planets elsewhere in the universe,we might see colors differently from those on Earth.

The center of the retina,having the greatest density of receptors,is the ________​

People see little or no color in the periphery of their visual field.​