What is the isoelectric state?
The absence of reactivity that indicates brain death
The point where excitation and inhibition balance each other out
The point at which half the brain’s energy goes to just maintain its structure
To what is most the brain’s energy devoted?
Transmitting signals
Maintaining electrical resting potentials
Keeping it from falling apart
How does cooking provide more energy than eating raw foods?
It releases calories
It makes food soft and denatures proteins so they are more easily absorbed
It makes it tastier
What does “sparse coding” of nerve impulses imply?
That there isn’t enough energy to send signals all the time
That brains have to figure out how to do more with less
That a small number of signals can carry a lot of information
Why are attempts at multitasking inefficient?
Our memory capacity is limited
Two or more things at once is confusing
The fact of selective attention means that we don’t have the energy to do so
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