15Chemicalsenses - Olfaction and Gustation The Chemical...

Info icon This preview shows pages 1–18. Sign up to view the full content.

View Full Document Right Arrow Icon
Olfaction and Gustation The Chemical Senses
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Organization of the Olfactory System Olfactory Epithelium Olfactory Bulb Location Targets Amygdala Hypothalamus Cerebral Cortex
Image of page 2
Figure 15.1 Organization of the human olfactory system (Part 1)
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Figure 15.1 Organization of the human olfactory system (Part 2)
Image of page 4
Figure 15.1 Organization of the human olfactory system (Part 3)
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Figure 15.1 Organization of the human olfactory system (Part 4)
Image of page 6
Unique properties of the olfactory system No distinct submodalities No obvious topographical map (although we’ll see that certain odorants excite neurons in specific parts of the olfactory bulb)
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Olfactory perception in human Poor relative to some other animals Differences in numbers of olfactory receptor cells Differences in numbers of odorant receptors Differences in amount of cortex dedicated to olfaction
Image of page 8
Figure 15.2 Odorant perception in mammals (Part 1)
Image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Sensitivity continued Ability to detect odorants depends on chemistry
Image of page 10
Figure 15.2 Odorant perception in mammals (Part 2)
Image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Human olfactory perception cont’d Qualities of odorants Divided into several scent categories Empirically derived (no obvious structural relationship among “related” odorants) Pungent, floral, musky, camphor, peppermint, ether and putrid
Image of page 12
Figure 15.2 Odorant perception in mammals (Part 2)
Image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Figure 15.2 Odorant perception in mammals (Part 3) Mapping of aesthetic quality of odor Orbitofrontal cortex Cingulate cortex
Image of page 14
Problems with olfaction Anosmia Congenital/genetic or Acquired (and sometimes temporary) Age-related decreases in sensitivity
Image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Figure 15.3 Anosmia is the inability to identify common odors
Image of page 16
Figure 15.4 Normal decline in olfactory sensitivity with age Diminished central activity in the aged.
Image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 18
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern