Ch. 4.4 - The Sense of Touch/Taste/Smell Flashcards

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1
Q

types of stimulation (3)

A

pressure, temperature, pain

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2
Q

mechanoreceptors

A

detect pressure and touch

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3
Q

nociceptors (3)

A
  • free nerve endings that detect pain and heat
  • fast fibres: registers sharp, immediate pain
  • slow fibres: register chronic dull pain
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4
Q

acuity (2)

A
  • ability to discern two points of pressure

- two-point threshold test

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5
Q

haptics (2)

A
  • active, exploratory aspect of touch sensation and perception
  • tactile agnosia
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6
Q

kinesthesis (2)

A
  • our sense of bodily motion and position

- works in conjunction with haptics to grasp and move objects

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7
Q

nociception

A

activity of the nerve pathways that respond to uncomfortable stimulation

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8
Q

gate control theory

A

explains our experience of pain as an interaction between nerves that transmit pain messages and those that inhibit those messages

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9
Q

subjectivity and pain

A

pain has a subjective component

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10
Q

empathy study (2)

A
  • participants watched video of actor that they empathized with or didn’t
  • rated their pain to heat stimuli while watching actor experience similar pain
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11
Q

gustatory system: taste (3)

A
  • receptorts for taste (tastebuds) located on small bumps (papillae) that cover the tongue
  • detect sweet, salty, bitter, sour, and umami (savoury)
  • projections go to the thalamus > gustatory cortex
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12
Q

supertasters (3)

A
  • about 1/4 of the population
  • can have many times the typical number (10,000) of the taste buds of average people
  • especially sensitive to bitter taste
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13
Q

olfactory epithelium (2)

A
  • thin layer of cells that are lined by sensory receptors called cilia
  • cilia transmit transducer signal to olfactory bulb via the olfactory tract
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