Visual stimuli refer to any form of visual information that is received and processed by our visual system. This can include objects, images, colors, patterns, and other visual elements that we perceive through our eyes.
Perceptual constancy is the tendency of our brain to perceive objects as having consistent size, shape, color, and brightness despite changes in their retinal image. For example, even if an object appears smaller or distorted due to its distance or angle from us, we still recognize it as the same object.
Selective attention refers to our ability to focus on specific aspects of visual stimuli while ignoring others. It allows us to concentrate on relevant information while filtering out unnecessary distractions.
Gestalt principles are a set of laws that describe how we perceive and organize visual information. These principles include concepts like figure-ground relationship (distinguishing between objects and their background), similarity (grouping similar items together), proximity (grouping items based on their closeness), and closure (filling in missing parts).