Sensation
Threshold
What is Sensation?
Sensory Adaptation
Signal-Detection Theyory
psychophysics
Any aspect of or change in an enviornment to which an organism responds is called a stimulus
Can be measured in multiple different ways, such as it's size, duration, intensity, or wavelenght.
the goal of psychophysics is to understand how the stimulation from the world affect the sensory experience produced by them
Sensations occurs whenever a stimuli activates a receptor
The sense organs can detect physical changes in energy such as with heat, light, sound, and pressure.
psychophysics helps to understand what is the difference between colors and wevelange.
A perception is the organization of information from sense to form meaningful experiences
Occurs when a sensation and another along past memories get together
The reduction or disappearance of sensory responsiveness when stimulation is unchanging or repetitious.
senses have the ability to adapt or match the new level of stimulus of the environment
In order to establish laws about how people sense the external world, psychologists first try to determine how much of a stimulus is necessary for a person to sense it at all.
Sensory adaptation allows us to notice differences in sensations and react to the challenges of different or changing stimuli.
the weakest amount of a stimulus that a person can detect half the time
absolute threshold
Sensory Differences and Ratios
these include the basic sense like Vision, Hearing, Smell, Touch, Taste
Absolute Sensory Thresholds
relatable concept
Weber’s law
difference threshold
. The difference threshold refers to the minimum amount of difference a person can detect between two stimuli
the just noticeable difference, or JND. This refers to the smallest increase or decrease in the intensity of a stimulus that a person is able to detect
the larger or stronger a stimulus, the larger the change required for a person to notice that anything has happened to it.
The signal-detection theory studies the relations between motivation, sensitivity, and decision making in detecting the presence or absence of a stimulus
Detection thresholds
Detection thresholds involve recognizing some stimulus against a background of competing stimuli, like a radar.