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P.C. F le tcher e t a l . Cog n i t ion 57 199 .5 ) 109 -12 8 117
s u p e r i o r t e m p o r a l g y r u s a n d t h e p o s t e r i o r c in g u l a te c o r t e x . S t r ik i n gl y , th e r e
w a s n o a c t iv a t i o n o f t h e l e f t m e d i a l f r o n t a l g y r u s ( s e e F i g. 2 ) .
3 2 3 ToM S versus PS
T h i s c o m p a r i s o n s h o w e d a c t iv a t io n in th e l e f t m e d i a l f r o n ta l g y r u s ,
p r e d o m i n a n t l y B r o d m a n n ' s a r e a 8 , e x t e n d i n g p o s t e r i o r l y i nt o a r e a 9 a n d th e
a n t e r i o r c i n g u l a t e c o r t e x . T h e r e w a s a d d i t i o n a l a c t i v a t i o n i n t h e p o s t e r i o r
c i n g u l a t e c o r t e x a n d i n f e r i o r p a r i e t a l l o b e o n t h e r i g h t ( s e e F i g . 3 ) .
I n o r d e r t o a s c e r t a i n th a t t h e r e w a s n o s u b t h r e s h o l d a c t i va t io n o f t h e l e f t
m e d i a l f r o n t a l g y r us i n a s s o c i a t io n w i t h th e P S ta s k , w e r e - e x a m i n e d t h is
c o m p a r i s o n a t a l o w e r th r e s h o l d ( p < .0 5 n o t c o r r e c t e d f o r m u l ti p l e
c o m p a r i s o n s ) . N o a c t i v a t io n w a s se e n r e l a t i v e t o t h e U S t a s k . W e a l s o
e x a m i n e d r C B F e q u i v a l e n ts f o r t h e p i x e l o f m a x i m a l a c t iv a t io n . A g a i n ,
t h e r e w a s n o e v i d e n c e o f a n y a c t iv a t i o n in th i s r e g i o n i n th e P S t a s k
( r C B F = 5 4 . 4 m l d l ' m in ~ a s c o m p a r e d t o 5 4 . 4 m l d l ' r a in ~ f o r t h e U S
1 r l ¢
s a g l t t l 3 1 c O F C I F , G t
- 7 , )
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0
61¢
t r - o r - s v e r - s e
F i g . 2 . S P M s p r e s e n t e d a s f o r F i g. l s h o w i n g a c t i v a t i o n s i n t h e c o m p a r i s o n o f t h e p h y s i c a l s t o r y
w i t h t h e u n l i n k e d s e n t e n c e s . H e r e a c t i va t i on s a r e s e e n i n t h e t e m p o r a l p o l e s b i l a te r a l l y (1 ) , t h e
p o s t e r i o r c i n g u l a t e c o r t e x ( 2 ) a n d t h e l e f t s u p e r i o r t e m p o r a l g y r u s ( 3 ) , b u t n o t t h e l e f t m e d i a l
P C . F l e t ch e r e t a l. / C o g n i t i o n 5 7 1 9 9 5 ) 1 0 9 - 1 2 8
T a b l e 3
I n c r e a s e s i n b r a i n a c t i v i t y a s s o c i a t e d w i t h s t o r y c o m p r e h e n s i o n
R e g i o n C o o r d i n a t e s a
x y z
Z v a l u e
T h e o r y o f m i n d s t or i es
v s . u n l i n k e d s e n t e n c e s
L . m e d i a l f r o n t a l g y r u s - 1 2 , 42 40 4 . 8
( B A 8 )
L . t e m p o r a l p o l e ( B A 3 8 ) - 4 4 , 2 0, - 1 6 4 . 9
R . t e m p o r a l p o l e ( B A 3 8 ) 4 4 , 1 8, - 1 6 5 . 3
R . p o s t e r i o r c i n g u l a t e 4 , - 6 4 , 1 2 4 . 8
c o r t e x ( B A 2 3 / 3 1 )
L . s u p e r i o r t e m p o r a l - 4 4 , - 5 8 2 0 4 . 2
g y r u s ( B A 2 2 / 3 9 )
P h y s i c a l s t o r i e s v s .
u n l i n k e d s e n te n c e s
L . t e m p o r a l p o l e ( B A 3 8 )
R . t e m p o r a l p o l e ( B A 3 8 )
L . p o s t e r i o r c i n g u la t e
c o r t e x ( B A 2 3 / 3 1 )
L . s u p e r i o r te m p o r a l
g y r u s ( B A 2 2 / 3 9 )
- 4 0 , 1 6 , - 1 2 4 . 7
4 4 , 1 6 , - 1 6 4 . 3
- 2 , - 6 2 8 4 .8
- 4 2 , - 6 4 , 1 6 3 .6
T h e o r y o f m i n d s t or i es
v s . p h y s i c a l s t o r i e s
L . m e d i a l f r o n t a l g y r u s - 1 2 , 3 6 , 3 6 4 . 1
( B A 8 )
R . p o s t e r i o r c i n g u l a t e 6 , 5 6 , 1 6 3 . 6
( B A 2 3 / 3 1 )
A n t e r i o r c i n g u l a t e ( B A 3 2 ) 0 , 3 8 , 2 4 3 . 7
R . i n f e r i o r p a r i e t a l ( B A 4 0 ) 4 2 , - 5 0 , 2 4 3 . 5
C o o r d i n a t e s a r e g i v e n w i th r e f e r e n c e t o a s t a n d a r d s t e r e o t a c t ic s p a c e ( T a l a i r a c h & T o u r n o u x ,
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T a b l e 4
D e c r e a s e s i n b r a i n a c t iv i ty a s s oc i a te d w i t h s t o r y c o m p r e h e n s i o n
R e g i o n C o o r d i n a t e s Z v a l u e
x y z
U n l i n k e d s e n t e n c e s v s .
s to r ie s
R . m i d d l e f r o n t a l g y r u s 3 6 , 3 0 , 2 8 6 . 6
( B A 4 6 )
L . m i d d l e f r o n t a l g y r u s - 3 2 , 5 0 , 2 0 3 . 9
( B A 1 0)
R . p r e c u n e u s ( B A 3 1 / 7 ) 8 , - 7 4 , 3 6 4 .1
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