wk 11 sp

Question 1

Taste (_____) and smell (______) are both ________

Answer 1

gustation

olfaction

chemosenses

Question 1

what causes sweet taste

Answer 1

sugars (fructose, glucose..)

Question 2

what causes sour taste

Answer 2

all acids

Question 3

what causes bitter taste

Answer 3

no unique chemical class, coffee, quinine …

Question 4

what causes umami taste

Answer 4

(savoury taste)
mono sodium glutamate

Question 5

2 routes of smell

Answer 5

1. Orthonasal = via inhalation
2. Retronasal = during chewing or swallowing

Question 6

how many diff types of olfactory receptors

Answer 6

350

able to discriminate a large number of smells

receptors of similar type project to same glomelurus and then to brain

Question 7

the Proust effect

why does this occour

Answer 7

vivid memories brought back by particular smells

Close connection between smell and Limbic system (emotion)

Question 8

Other influences on taste

Answer 8

• Texture
• Pain
• Sound
• Vision

Question 9

Multisensory stimulus

Answer 9

generates multiple independent energies, which are simultaneously detectable by different types of sensory receptors

Question 10

Single neurone may respond to
more than one modality e.g. orbitofrontal cortex

Answer 10

taste and smell

Question 11

Single neurone may respond to
more than one modality e.g.
Posterior parietal cortex

Answer 11

touch, vision, audition

Question 12

kinaesthesia

Answer 12

sense of movement

Question 13

Synaesthesia

Answer 13

Stimulation of a particular type which always
leads to another perceptual experience
e.g. seeing coloured letters
tasting shapes
Approximately 1 in 200 people