Some Issues of Human Perception

• What graphical primitives do humans detect quickly (preattentive)?
• What graphical entities can be accurately measured?
• How many distinct entities can be used without confusion?
• How do we combine primitives to recognize complex phenomena?
• How should color be used?

• Human Perception and Information Theory (Source: Miller)
• Absolute Judgement of 1-D Stimuli
• Absolute Judgement of Multidimensional Stimuli
• Measurement versus Detection (Source: Cleveland)
• The Role of Focus and Expectation
• Expanding Capabilities
• Relationship to Immediate Memory
• The Role of Recoding
• Summary of Perceptual Experiments
• Implications in Visualization