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  1. accessory structures
    Structures such as the lens of the eye, that modify a stimulus
  2. Transduction
    The process of converting incoming energy into neural activity.
  3. Neural Receptors
    Specialized cells that detect certain forms of energy and transduce them into nerve cell activity.
  4. Sensory Adaptation
    The process through which responsiveness to an unchanging stimulus decreases over time.
  5. Encoding
    Translating the physical properties of a stimulus into a pattern of nerce cell activity that specifically identifies those properties.
  6. Specific Energy Doctrine
    The discovery that stimulation of a particular sensory nerve provides codes for that sense, no matter how the stimulation takes place.
  7. Sound
    A repetitive fluctuation in the pressure of a medium, such as air.
  8. Amplitude
    The difference between the peak and the baseline of a waveform.
  9. Wavelength
    The distance from one peak to the next in a waveform.
  10. Frequency
    The number of complete waveforms, or cycles, that pass a given point in space every second.
  11. Loudness
    A psychological dimension of sound determined by the amplitude of a sound wave.
  12. Timbre
    The mixture of frequencies and amplitudes that make up the quality of sound.
  13. Tympanic membrane
    A membrane in th emiddle ear that generates vibrations that match the sound waves sriking it.
  14. Cochlea
    A fluid-filled spiral structure in the ear in which auditory transduction occurs.
  15. Basilar membrane
    The floor of the fluid-filled duct that runs through the cochlea.
  16. Acoustic nerve
    The bundle of axons that carries stimuli from the hair cells of the cochlea to the brain.
  17. Pitch
    How high or low a tone sounds.
  18. Absolute Pitch
    The ability to identify the musical notes associated with specific sound frequencies.
  19. Auditory Cortex
    The area in the brain's temporal lobe that is first to receive information about sounds from the thalamus.
  20. Place theory
    A theory that hair cells at a particular place on the basilar membrane respond most to a particular frequency of sound.
  21. Visible light
    Electromagnetic radiation that has wavelength of approximately 400 to 750 nm
  22. Light Intensity
    A physical dimension of light waves that refers to how much energy that light containsit determines the brightness of light.
  23. Light Wavelength
    The distance between peaks in light waves.
  24. Cornea
    The curved, transparent, protective layer through which light rays enter the eye.
  25. Pupil
    An opening in the eye, just behind the cornea, through which light passes.
  26. Iris
    The colorful part of the eye, which constricts or relaxes to adjust the amount of light entering the eye.
  27. Lens
    The part of the eye behind the pupil that bends light rays, focusing them on the retina.
  28. Retina
    The surface at the back of the eye onto which the lens focuses light rays.
  29. Volley Theory
    The view that some sounds are coded by matching the frequency of neural firing.
Card Set:
2011-09-20 02:20:30

CH 4
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