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41 37
14+23
. 41 36
14+23
.
Exact Estimate
300 msec
response
-1500 -1000 -500 0 500 1000 1500 2000 2500 3000-10
-5
0
5FZ
-1500 -1000 -500 0 500 1000 1500 2000 2500 3000-4
-2
0
2
4
6CZ
-1500 -1000 -500 0 500 1000 1500 2000 2500 3000-2
0
2
4
6PZ
odorproblem answer
Vol
tsV
olts
Vol
ts
msec
Rapid TransitionSlow Transition
Odor evoked activity at 800msec
Slice Thicknesse.g., 6 mm
Number of Slicese.g., 10
SAGITTAL SLICE IN-PLANE SLICE
Field of View (FOV)e.g., 19.2 cm
VOXEL(Volumetric Pixel)
3 mm
3 mm6 mm
Slice Terminology
Matrix Sizee.g., 64 x 64
In-plane resolutione.g., 192 mm / 64
= 3 mm
From fMRI for Dummys
MRI studies brain anatomy.Functional MRI (fMRI) studies brain function.
MRI vs. fMRI
From fMRI for Dummys
Temporal precision
Spa
tial p
reci
sion
perfect
fMRI
EEGERP
PET
The Human Connectome Project
So how do brains really work?
Hydraulic
Clock
Dynamo
Telephone
Analog Computer
Digital Computer
Hologram
Digital Computer…