Architectural Technology in the Built Environment.
Understanding the perceptual process of an environmental stimulus.
The minimum level of stimulus intensity needed for detection.
C. A and B.
Moving the head or eyes through the environment.
Light energy.
All of the things in our environment that we can potentially sense.
A. M of constant stimuli > M of adjustment > M of limits.
Conscious sensory experience.
No, it is rare in reality.
The minimum difference between two stimuli that can be detected.
n < 1.
200.
35.35 cm.
Middle.
Stimulus on the receptors.
n > 1.
0% detected.
85.
A method used to determine absolute thresholds by presenting stimuli at varying intensities in a random order.
It is usually gradual rather than abrupt.
A method where the participant adjusts the stimulus intensity until it reaches their threshold of detection.
Method of Adjustment.
Environmental stimulus.
JND = KS, where K is the Weber fraction and S is the environmental stimulus value.
0.01.
Perceptual response.
Because of the observer's movements and shifts in attention.
Because the Weber fraction is no longer a constant.
Perception with the environmental stimulus.
To detect light at different lighting intensities.
Knowledge and interpretation of stimuli.
0.75.
The smallest amount of stimulus energy necessary for an observer to detect the stimulus.
They are detected on some presentations and not on others.
We find it particularly interesting.
As light intensity increases, the percent of stimuli detected also increases until reaching the threshold.
It gives the observer an active role, maximizing the probability that they will stay awake during the experiment.
The intensity level at which the stimulus can just barely be detected.
K = JND/S.
A type of sensation related to the perception of sound.
5 units.
K = 10/(150)⁰⁷⁵ = 0.2333.
P = K (S - S₀)ⁿ or Log P = n log (S - S₀) + log K.
The smallest amount of stimulus energy necessary for an observer to detect the stimulus.
They are transformed by the brain into the experience of seeing an object.
A technique where the observer slowly changes the intensity of the stimulus until it can just barely be detected, determining the absolute threshold.
The observer adjusts the intensity of the stimulus.
0.1 cm.
A type of sensation related to the perception of light and images.
A type of sensation related to the perception of temperature.
A method where five to nine stimuli are presented to an observer, ranging from clearly detectable to undetectable.
It is clearly below the threshold so that the observer can never detect it.
It indicates response compression.
A stimulus that captures our attention due to its interesting nature.
A method for determining absolute thresholds by gradually increasing or decreasing the intensity of a stimulus until it is detected or no longer detected.
Temperature of air.
The crossover point for each sequence of stimuli.
Ascending and descending order.
The power of perceiving through the senses; a physical experience from the stimulation of sense organs.
K is no longer a constant.
A. Sensation is the result of perceiving through the senses.
S represents the stimulus intensity, which is 100 units in this example.
It indicates response expansion.
The intensity that results in detection on half the trials, which is 180.
C. 9.
The minimum detectable difference between two stimuli.
Method of Adjustment.
Transduction.
JND = K * S, where K is the Weber fraction and S is the stimulus intensity.
P = K (S - S₀)ⁿ.
22.80 units.
Sound energy.
Highest.
Method of Constant Stimuli.
Just Noticeable Difference.
180.
150.
Wearing clothes when you feel cold.
3.
A technique where stimuli are presented in either ascending or descending order to determine thresholds.
8 tests.
Whether doubling the stimulus intensity causes more or less than a doubling of the response or perceived magnitude.
n = 1.
0.35 cm.
The process by which an organism detects and interprets information from the external world using sensory receptors.
It is clearly above the threshold so that the observer detects it without fail.
Each stimulus is presented a number of times in random order.
It indicates the point at which 50% of stimuli are detected.
Attended stimulus.
When the stimulus is well above the threshold (denoted by S₀).
10 units.
C. Perception is the art and science of perceiving.
Increasing 'Y' responses from 0% to 100%.
The perceived magnitude.
K represents the Weber fraction, which is 0.05.
The stimulus intensity has a sharp transition at around the absolute threshold.
A constant.
It implies something thought of, deduced, or figured out.
The relationship between perception and stimulus.
The exponent indicating the slope of the lines in the log-log plot.
It represents the stimulus.
The threshold stimulus.
It indicates a linear response.
