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Table 1 Volumetric measurements in cm-3 +/- standard deviations. An ANCOVA was conducted to control for whole brain volume and age for each structure. The temporal lobe, superior temporal gyrus and hippocampus/amygdale are gray matter segmented volumes only.

From: A preliminary DTI study showing no brain structural change associated with adolescent cannabis use

Structure Volume (in cm-3)

Cannabis Users (N = 10)

Cannabis Non-Users (N = 10)

F

P<

Whole Brain

1529.41 +/- 109.59

1452.25 +/- 113.35

-1.55

0.14

Lateral Ventricles

    

   Left

7.28 +/- 3.46

5.71 +/- 2.24

1.13

0.35

   Right

6.47 +/- 4.00

5.05 +/- 2.05

1.02

0.38

Amygdala-Hippocampus

    

   Left

6.10 +/- .75

5.70 +/- .81

1.03

0.38

   Right

6.23 +/- 1.00

5.97 +/- .90

0.83

0.46

Temporal Lobe

    

   Left

70.86 +/- 5.41

69.31 +/- 9.84

1.47

0.24

   Right

69.69 +/- 5.04

70.85 +/- 6.60

2.281

0.15

Superior Temporal Gyrus

    

   Left

13.38 +/- 1.22

13.44 +/- 1.94

0.01

0.99

   Right

12.16 +/- 1.64

12.28 +/- 1.28

0.09

0.92