Week 4

• Perception


  Transforming sensory input into information
• Interaction


  Dialogue between systems and users through acting, processing, and sensing
• Effectors


  Body parts that cause an effect in response to sensory inputs
• Sensors


  Components that perceive actions and inform outcomes in systems
• Modalities


  • Different mediums used for input and output in interactions
• Cognition


  Understanding of conditions that influence human behavior
• Cognitive Variables

  • Factors like concentration lapses, mood changes, prejudices, errors, and judgements that affect behavior
• Graphical Representation


  The layout and choice of visuals in interactive systems for better user experience
• Interaction Modalities


  • Different ways in which users can interact with a system, such as speech or gestures
• Law of Pragnanz


  Principle stating that people interpret complex images in the simplest way possible
• Closure


  Gestalt principle of combining parts to perceive a simpler whole
• Figure-ground


  Gestalt principle of distinguishing between an object and its background
• Proximity


  Gestalt principle that states closer objects are perceived as more related
• Symmetry and Order


  Gestalt principle where human eyes seek symmetry and order in visual elements
• Similarity


  Gestalt principle that elements sharing similar characteristics are perceived as related
• Common Regions


  Gestalt principle where elements within the same region are perceived as belonging to the same group
• Focal points


  Elements with a point of interest that draw the viewer’s attention
• Metaphor


  Representation of something abstract using a tangible thing
• Skeuomorph


  An element in GUI that mimics a physical object
• Auditory perception


  Ability to perceive sounds through vibrations and pressure
• Sound skeuomorph


  A sound element that mimics real-world sounds
• Tactile perception


  Ability to understand information from the skin
• Interactive products

  • Utilize auditory perception for ambience, sound effects, and feedback
• Familiar metaphors


  Help users understand unfamiliar concepts in interaction design