The Science of Smell
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Questions and Answers

Which term refers to the process by which the brain selects, organizes, and interprets sensations?

  • Absolute threshold
  • Perception (correct)
  • Sensation
  • Transduction
  • What is the minimum amount of stimulation needed for an observer to notice a stimulus called?

  • Absolute threshold (correct)
  • Weber's law
  • Just noticeable difference
  • Signal detection theory
  • What is the process by which sense organs gather information about the environment and transmit it to the brain called?

  • Just noticeable difference
  • Perception
  • Sensation (correct)
  • Transduction
  • What is the term for the lowest level of stimulation required to sense that a change in stimulation has occurred?

    <p>Just noticeable difference</p> Signup and view all the answers

    Which principle states that sensation and perception are active, not passive?

    <p>Active perception principle</p> Signup and view all the answers

    What is the term for the process by which sensory receptors respond to environmental stimuli and generate action potentials in adjacent sensory neurons?

    <p>Transduction</p> Signup and view all the answers

    According to Fechner’s law, how does the subjective experience of intensity grow as the physical magnitude of a stimulus grows?

    <p>Arithmetically</p> Signup and view all the answers

    According to Stevens’ power law, how does subjective intensity grow as actual intensity grows?

    <p>Exponentially</p> Signup and view all the answers

    What is sensory adaptation?

    <p>The tendency of sensory systems to respond less to stimuli that continue without change</p> Signup and view all the answers

    What is subliminal perception?

    <p>The tendency to perceive information outside our conscious awareness</p> Signup and view all the answers

    Which cells in the retina are responsible for vision in dim light?

    <p>Rods</p> Signup and view all the answers

    Where are cones most concentrated in the retina?

    <p>Fovea</p> Signup and view all the answers

    What are the two processing streams involved in visual information flow from the primary visual cortex?

    <p>'What' and 'Where' pathways</p> Signup and view all the answers

    Which part of the brain is responsible for processing olfactory information?

    <p>Frontal lobes</p> Signup and view all the answers

    What is the primary function of taste receptors?

    <p>Transduce chemical information into neural information</p> Signup and view all the answers

    Which sense includes pressure, temperature, and pain?

    <p>Touch</p> Signup and view all the answers

    Where is the primary touch center in the brain located?

    <p>Somatosensory cortex</p> Signup and view all the answers

    According to the gate-control theory, what influences the experience of pain?

    <p>Central nervous system</p> Signup and view all the answers

    What do the proprioceptive senses provide information about?

    <p>Body's position and movement</p> Signup and view all the answers

    What is the primary function of depth perception?

    <p>Organize perception in three dimensions</p> Signup and view all the answers

    Which type of processing starts 'at the top' and is influenced by the observer's expectations and knowledge?

    <p>Top-down processing</p> Signup and view all the answers

    What is the term used to describe perceptual expectations created by experience with the environment?

    <p>Perceptual set</p> Signup and view all the answers

    What are the two aspects of perceptual set?

    <p>Current context and schemas</p> Signup and view all the answers

    Which direction does perception proceed according to current thinking?

    <p>In both directions simultaneously</p> Signup and view all the answers

    What are the enduring knowledge structures that shape perceptual interpretation called?

    <p>Schemas</p> Signup and view all the answers

    What can influence perceptual interpretation, similar to expectations?

    <p>Motives</p> Signup and view all the answers

    Which type of processing starts 'at the bottom' and is based on sensory information?

    <p>Bottom-up processing</p> Signup and view all the answers

    What is the term used to describe current context in perceptual set?

    <p>Contextual bias</p> Signup and view all the answers

    What is the term used to describe the influence of motives on perceptual interpretation?

    <p>Motivational bias</p> Signup and view all the answers

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