Seminar Perception Flashcards
(15 cards)
What is perceptual adaptation?
A process by which perception adjusts after prolonged exposure to a stimulus, often followed by an aftereffect.
What typically follows perceptual adaptation?
n aftereffect, where perception is biased in the opposite direction of the adapted stimulus.
What does interocular transfer (IOT) indicate about adaptation?
If adaptation transfers between eyes, the effect occurs at a cortical level rather than in the retina.
What is the tilt aftereffect?
After viewing tilted lines, vertical lines appear tilted in the opposite direction.
How does spatial frequency adaptation affect perception?
After adapting to coarse or fine patterns, subsequent stimuli appear shifted away from the adapting frequency.
Where does colour adaptation occur, and what is its aftereffect?
Occurs in the retina (no IOT), and leads to perception of the opponent colour (e.g., red → green afterimage).
What is the motion aftereffect (MAE)?
A stationary pattern appears to move in the opposite direction after prolonged viewing of motion.
What influences the motion aftereffect?
Speed of the adaptor
Type of test stimulus
Involvement of different motion detectors
What is numerosity adaptation?
After viewing many or few items, a moderate number appears less or more numerous than it really is.
What is size adaptation?
After exposure to large or small stimuli, neutral-sized stimuli appear smaller or larger, respectively.
What is face adaptation?
Viewing distorted faces alters the perception of subsequent faces, which appear biased in the opposite direction.
What dimensions can face adaptation affect?
Gender
Ethnicity
Expression
Facial shape
What does partial transfer of face aftereffects suggest?
That both low- and high-level visual processes are involved in face perception.
Why is perceptual adaptation important in neuroscience?
It shows that the brain dynamically recalibrates perception to maintain efficiency and sensitivity.
What should an adaptation essay focus on?
Evaluating how attention affects adaptation, using 1–2 types (e.g., orientation or motion), comparing methods and findings.
