Chapter 5 Flashcards

Physical stimuli that is then detected and processed in the thalamus/brain

this is the furthering processing, organization, and interception of the sensory information

Based on the physical features of the stimuli

Based on past knowledge expectations or experience shape the interpretation of sensory information

This is the minimum amount of stimuli needed before you experience sensation

Sometimes called a noticeable difference

The minimum change in volume required or you to notice a difference between 2 stimuli

Theat detecting stimulus is not an objective component but instead a subjective decision

If the signal is present and detected

If the signal is present and not detected

If the participant reports that there was a signal and the signal was not present

If the signal is not present and the participant does not detect it

The tendency for a participant to report or not report in an ambiguous trial

You adapt to a continuing stimulus, making it unnoticeable

The mixing of senses together

Cornea, lens, retina, pupil, iris

A muscle inside of the lens that helps focus on distant objects

The muscle has a hard time thinking which then makes it impossible to see close objects

A receptor cell

Responds to very low level of light, responsible for nigh vision

Does not support color

Poor at fine detail

Less sensitive to low levels of light

they capture brighter light and more deatials

Cones are dense in this region

They become scared around the other sides of the eye

Creating a blind spot

• Short wavelength, this is with the colors blue-violet
• Medium wavelength, this is with the colors green-yellow
• Long wavelength, this is with the colors red-orange

This is not necessarily being blind and cant seeing color, just that partial blindness for certain colors due to missing photopigment sensitive to the wavelengths

Works through a process of excitatory and inhibitory responses with two components of each mechanism opposing each other

Example:

Your eyes start to get fatigued from staring at the red so the green receptors are not fatigued and therefore the after imagine is green

That perception is more than the result of a collection of sensory data, the whole of perceptual experience is more than the sum of its parts

The closer two figures are to each other, the more likely we are to group them and see then as part of the same object

We tend to group figures according to how closely they resemble each other, whether in shape, color, or orientation

We tend to group edges or contours that are smooth and continuous as opposed to those having abrupt or sharp edges

We tend to complete figures that have gaps

We tend to see things that move together as belonging to the same group

How loud a sensory is

The greater the amplitude the louder the object is

Determines the pitch

We hear ta high frequency that has a higher pitch

Sound waves travel into the eardrum

The vibration are transferred into 3 bones:

Hammer

Anvil

Stirrup

The ossicles transfer the eardrum vibrations into the oval window

A membrane located within the cochlea in the inner ear

Is a fluid-filled tube that curls into a snail-like shape

The oval windows vibration create pressure waves in the cochlear fluid, which prompt the basilar membrane to oscillate

The movement of the basilar membrane stimulates hair cells to bend and to send information to the auditory nerves

These hair cells are the primary auditory receptors

The electrical signals generated by the hair cells are send to the auditory nerve

The signals travel from the auditory nerve to the thalamus and then to the primary auditory cortex in the temporal lobe of the brain

Balance, if affects you can be severely dizzy

Used to encode relatively low frequencies, such as the sound of a tuba

Perception of pitch

The brain integrates the different sensory information coming from each

Humans draw on the intensity and timing of sounds to locate where the sounds are coming from

Sensation of temperature, pressure and pain

This is anything that makes contact with our skin

Sharp, immediate pain

Chronic, dull and steady pain

We experience pain when pain receptors are activated and a neural gate in the spinal cord allows the singles thorough to the brain

"gate in the spinal cord"

To reduce pain receptors