meng1

• What does the term absolute threshold refer to in psychophysics?

  Smallest amount of stimulus energy
• What does the absolute threshold define in psychophysics?

  Minimum intensity at which a stimulus is detected
• How does the absolute threshold relate to sensation in psychophysics?

  It indicates the minimum energy needed for sensation
• What is perception in the context of stimuli?

  Ability to experience and interpret stimuli
• What does stimulus intensity refer to?

  Strength of a sensory signal
• What are the key features distinguishing absolute threshold and difference threshold?

  • Absolute Threshold:
  • Smallest detectable stimulus level
  • Starts from no stimulus
  • Minimum stimulus for detection
  • Measures sensory sensitivity
  • Difference Threshold:
  • Smallest detectable change in stimulus level
  • Starts above absolute threshold
  • Minimum change for noticeable difference
  • Measures sensitivity to change
• What is the difference threshold?

  The amount of change in a stimulus required
• If a stimulus is below the absolute threshold, what can be said about its detection?

  It cannot be detected by an individual
• How does the absolute threshold relate to perception?

  It marks the transition from imperceptible to perceptible
• What equipment is used to measure auditory thresholds?

  Audiometer
• What does the absolute threshold signify?

  Minimum intensity of detectable stimulus
• What is the absolute threshold?

  The smallest amount of stimulus energy needed
• Why is the absolute threshold significant in sensory perception?

  It measures sensory sensitivity
• What is the tactile threshold?

  The minimum pressure detectable on the skin
• What is the absolute threshold?

  Smallest amount of stimulus you can notice
• What is the definition of absolute threshold?

  • The lowest intensity at which a stimulus can be reliably detected
• How is absolute threshold measured for seeing?

  By turning on a light very dimly
• What is the difference threshold?

  Minimum change needed to notice a difference
• What is the key difference between absolute threshold and difference threshold?

  One is noticing presence, the other is change
• How is the absolute threshold illustrated?

  Like the quietest whisper or dimmest light
• What does absolute threshold relate to in terms of sensory perception?

  It relates to the minimum level of stimulus detection
• What does measuring the tactile threshold indicate?

  Sensitivity to touch
• How is the difference threshold illustrated?

  By how much brighter a light needs to be
• What is the visual threshold?

  The dimmest light a person can see
• How can absolute thresholds be measured?

  Using various senses and different methods
• Why is it important to measure absolute thresholds?

  To understand the limits of sensory perception
• What does measuring the auditory threshold help determine?

  Hearing sensitivity of an individual
• What is the definition of absolute threshold?

  The smallest amount of something you can notice
• How is the tactile threshold measured?

  By applying pressure with von Frey filaments
• What are the methods and equipment used to measure absolute thresholds for different senses?

  • Auditory Threshold:
  • Method: Tones at varying intensities
  • Equipment: Audiometer
  • Visual Threshold:
  • Method: Lights at varying intensities
  • Equipment: Calibrated light sources
  • Tactile Threshold:
  • Method: Pressure with varying force
  • Equipment: Von Frey filaments
• How is absolute threshold measured for touching?

  By using a feather to touch the skin gently
• How is the auditory threshold measured?

  Using an audiometer with varying tones
• What is the auditory threshold?

  The quietest sound level detectable
• How is the visual threshold measured?

  Using calibrated light sources to detect flashes
• What is an absolute threshold?

  The minimum level of stimulus detection
• How is absolute threshold measured for hearing?

  By playing sounds starting very quietly
• What does measuring the visual threshold reveal?

  Sensitivity to light
• How does the measurement of absolute threshold differ from that of difference threshold?

  Absolute threshold measures minimum stimulus for detection
• Why is the difference threshold significant in sensory perception?

  It measures sensitivity to change