Book: Electrrophysiological brain

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what do single cell recordings do?
Measure the responsiveness of a neurone to a given stimulus (in terms of APs per second)
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what is a grandmother cell?
A hypothetical neurone that just responds to one particular stimulus
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How are single cell recordings obtained?
By implanting a small electrode (intra- or extra-cellular recording) and counting the APs produced (spikes per second)
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Name three types of representation found at the neural level
1) Local 2) Fully distributed 3) sparse distributed
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how does rate coding work?
the informational content of a neuron may be related to the number of APs per second
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how does temporal coding work?
the synchrony of firing may be used by a population of neurons to code the same event
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What happens when different EEG waves are averaged?
The signal to noise ratio is enhanced and an event-related potential is observed.
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What does exogenous mean?
Related to properties of the stimulus
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What does endogenous mean?
Related to properties of the task
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What is the Inverse problem in ERP research?
The difficulty of locating the sources of electrical activity from measurements taken at the scalp
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what is dipole modelling in ERP research?
An attempt to solve the inverse problem; how many dipoles (regions of electrical activity) contribute to the signal recorded at the scalp
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what does an MEG scanner measure?
The magnetic fields produced by the electrical activity in the brain
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Card 2

Front

what is a grandmother cell?

Back

A hypothetical neurone that just responds to one particular stimulus

Card 3

Front

How are single cell recordings obtained?

Back

Preview of the front of card 3

Card 4

Front

Name three types of representation found at the neural level

Back

Preview of the front of card 4

Card 5

Front

how does rate coding work?

Back

Preview of the front of card 5
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