Brain Imaging Techniques & Atlases – Chapter 7 2026 Study Guide with Solutions

Brain Imaging Techniques & Atlases Chapter 7 2026 _ Study Guide with Solutions Page 1 2026-03-18




Brain Imaging Techniques &
Atlases Chapter 7 2026 |
Study Guide with Solutions




Guidehttps://www.stuvia.com/dashboard!@_)#*)(@$)($@*($@)($@*_ 1
Page 1 of 18 Brain Imaging Techniques & Atlases Chapter 7 2026 _ Study Guide with Solutions.pdf

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EEG


records electrical activity in the brain (brain waves)




graded potentials on many thousands of neurons


What does an EEG record?


electrical activity detected through the skull


What does the signal generator of an EEG detect?


- studying states of consciousness
- diagnosing epilepsy and brain damage
- studying cognitive functions


EEG is a valuable tool for what?




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Beta rhythm (waking state)


Small-amplitude (height) EEG waves, fast frequency (repetition period); eyes open


Alpha rhythm (relaxed state)


Large-amplitude EEG waves (height), slow frequency (repetition period); eyes closed


Theta rhythm (drowsy state)


slowed-frequency EEG waves (repetition period), increased amplitude (height); eyes not moving


Delta rhythm (sleeping state)


very slow frequency EEG waves, highest amplitude; associated with deep sleep (NREM sleep); no eye movement


Brain death


EEG becomes flat line




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