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Object Perception Challenge
Ambiguity in stimuli complicates recognition for humans and machines.
Gestalt Psychology
Focuses on how whole forms are perceived differently than parts.
Laws of Perceptual Organization
Principles guiding how we group visual elements.
Figure-Ground Segregation
Distinguishing figure from background in visual scenes.
Properties of Figure
More 'thinglike' and appears in front of background.
Properties of Ground
More uniform and extends behind the figure.
Recognition by Components Theory
Objects recognized by arrangement of geometric shapes, geons.
Viewpoint Invariance
Ability to recognize objects from different angles.
Past Experiences in Perception
Previous knowledge influences how we interpret stimuli.
Brain Response to Faces
Specific brain areas activated when viewing faces.
Fusiform Face Area (FFA)
Brain region specialized for face recognition.
Prosopagnosia
Inability to recognize faces despite normal vision.
Infant Face Recognition
Development of face perception in early childhood.
Ambiguous Stimuli
Visual input that can be interpreted in multiple ways.
Illusory Contours
Perceived edges without a physical boundary present.
Continuity Principle
Perception favors smooth, continuous patterns.
Pragnanz Principle
Perception prefers simplest, most stable interpretations.
Common Fate Principle
Elements moving together are perceived as a group.
Semantic Regularities
Characteristics commonly associated with specific scenes.
Scene Schema
Knowledge of typical elements found in a scene.
Light-from-Above Heuristic
Assumption that light comes from above in nature.
Binocular Rivalry
Conflicting images presented to each eye.
Expertise Hypothesis
Proficiency in face recognition due to exposure.
Predictive Coding
Brain's method of predicting sensory input.
Lateral Occipital Complex (LOC)
Brain area active during object perception.
Parahippocampal Place Area (PPA)
Responds to spatial layout and places.
