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Although
the receptors and neural pathways for many senses have been exhaustively
characterized, when a man with emphysema walks up the stairs and
says, "I am out of breath" neither the receptors involved
in his sensation or the neural pathways involved in communicating
signals from receptor to brain are known.
Question
8.1
Where
in the cortex is the sensation of breathlessness represented?
 | Pons |
 | Limbic
system |
 | Motor
cortex |
 | We
don't know |
| Figure
8.1: Major Components of the Limbic System
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| Figure
8.2 Statistical Map Showing Significant Regional Signal
Increases
Associated with Periods of Air Hunger in an Experiment
in
which Subjects Were Made Breathless with Acute Hypercapnia
in the Setting of Restricted Tidal Volumes
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| Reprinted
with permission. |
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