Table 1 Inclusion criteria for PTSD cases (p) and control (c) groups

p

C

P

c

p

c

Age between 18 and 60 (inclusive)

X

X

X

X

X

X

Life time history of traumatic life experience as defined in criteria A of DSM IV criteria for PTSD

X

X

X

X

X

X

PTSD diagnosis according DSM IV criteria as assessed by SCID I applied by trained psychiatrists or psychologists

X

X

X

Good general health with no additional diseases expected to interfere with the study

X

X

X

X

X

X

Able to understand and signed informed consent

X

X

X

X

X

X

Completed 5 years grades of education

X

X

Fluent in Portuguese

X

X

X

X

X

X

Willing and able to complete all assessments

X

X

X

X

X

X

Willing to undergo neuroimaging (MRI)

X

X

Willing to undergo neuroimaging (SPECT)

X

X