lecture02
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---
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## Brain imaging techniques
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* Computerized tomography (CT) scan– uses X-rays in 3-dimensions to generate a brain image
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* Can be digitally sectioned to show internal areas of the brain
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* Can distinguish between grey matter and white matter, see the ventricles, has resolution of several millimeters
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<div><img src="figs/Neuroscience5e-Box-01Ba-0_2168a8d.jpg" height="100px"><figcaption></figcaption></div>
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Note:
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---
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## Magnetic resonance imaging (MRI)
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* Uses rotating magnets to generate image
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* Non-invasive
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* Can view images from any angle
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* Resolution under 1 mm
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* Can be adapted to do functional MRI imaging
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---
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## Tumor detection
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MRI
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CT-SCAN
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<div><img src="figs/image29_a6736bb.png" height="100px"><figcaption></figcaption></div>
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Note:
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---
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## Magnetic resonance imaging (MRI)
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<div><video height=400px controls src="figs/Animation01-01MagneticResonanceImaging.mp4"></video><figcaption>Neuroscience 5e Animation 1.1</figcaption></div>
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Note:
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---
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## functional magnetic resonance imaging (fMRI)
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* Oxy-hemoglobin and deoxy-hemoglobin have different magnetic resonance signals
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* Brain areas activated by a specific task utilize O2, then a pulse of O2 comes back and creates an influx of oxy-hemoglobin
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* Can repeat task many times over
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* Spatial resolution– millimeters
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* Temporal resolution– seconds
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---
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## fMRI
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<div><img src="figs/handclench_3bcf600.jpeg" height="100px"><figcaption></figcaption></div>
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Note:
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---
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## Mapping brain activity with fMRI
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<figure><img src="figs/Neuroscience5e-Fig-27.06-0_2687612.png" height="400px"><figcaption>Neuroscience 5e Fig. 27.6</figcaption></figure>
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Note:
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---
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## Lie detection with fMRI
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<div><img src="figs/image30_b6c88a3.png" height="100px"><figcaption></figcaption></div>
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Note:
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build a new age lie detector
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---
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