Sensation And Perception

    Cards (21)

    • What is sensation?
      Information picked up by senses
    • How does perception differ from sensation?
      Perception interprets sensory inputs meaningfully
    • What are the key differences between sensation and perception?
      • Sensation: Detection of stimuli
      • Perception: Interpretation of stimuli
      • Sensation: Not consciously experienced
      • Perception: Consciously experienced
      • Sensation: Involves sensory receptors
      • Perception: Involves brain processing
    • What initiates bottom-up processing?
      Raw sensory data
    • What does top-down processing rely on?
      Knowledge and expectations
    • How does top-down processing work when reading?
      It anticipates words based on context
    • How do bottom-up and top-down processing work together?
      • Bottom-up: Starts with sensory data
      • Top-down: Uses knowledge for interpretation
      • Together: Create complete understanding
    • What is a common feature of sensory systems?
      Discrimination
    • What does discrimination in sensory systems allow?
      Ability to differentiate between sensations
    • What is the threshold for activation?
      Minimum stimulus intensity needed to sense
    • What is the absolute threshold?
      Lowest stimulus intensity detectable 50% of time
    • What is the difference threshold?
      Smallest change in stimulus intensity noticeable
    • What are the types of thresholds in sensory systems?
      • Absolute threshold: Lowest intensity detectable
      • Difference threshold: Smallest change noticeable
    • What is transduction in sensory processing?
      Conversion of stimuli into electrical signals
    • What role does transduction play in sensory processing?
      It converts stimuli for brain interpretation
    • How does transduction vary across senses?
      • Vision: Light waves to electrical signals
      • Hearing: Sound waves to electrical signals
      • Taste: Chemicals to electrical signals
      • Smell: Odor molecules to electrical signals
      • Touch: Pressure/temperature to electrical signals
    • What is sensory adaptation?
      Reduced sensitivity to constant stimuli over time
    • What are the two main types of sensory receptors?
      Tonic and phasic receptors
    • How do tonic receptors respond to stimuli?
      Slowly and adapt little
    • How do phasic receptors respond to stimuli?
      Quickly and adapt rapidly
    • What is the importance of sensory discrimination?
      • Allows understanding of environment
      • Enables appropriate reactions to stimuli
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