And Perception - Sensation

Difference Threshold (Just Noticeable Difference): The minimum change in a stimulus required for a person to detect that a change has occurred. Perception: The Interpretation

The human brain does not see things in isolation; it looks for patterns. identifies several laws of grouping:

The critical step where physical energy is transformed into electrical impulses the brain can understand. Thresholds: Sensation and Perception

Perception is the psychological process of organizing and interpreting those neural signals. It is how the brain makes sense of the "raw data" provided by sensation.

Using prior knowledge, experiences, and expectations to interpret sensory info (concept-driven). 3. Principles of Organization Sensation and Perception

Distinguishing an object (the figure) from its surroundings (the ground). Similarity: Grouping similar items together. Proximity: Grouping items that are close to each other.

Absolute Threshold: The minimum intensity needed to detect a stimulus 50% of the time. Sensation and Perception

A mental predisposition to perceive one thing and not another based on expectations.