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. Author manuscript; available in PMC: 2015 Aug 7.
Published in final edited form as: Neuropsychologia. 2013 Oct 21;51(14):3033–3040. doi: 10.1016/j.neuropsychologia.2013.10.008

Table 2.

The ex-Gaussian parameters for the easy (50/50) and difficult (90/10) conditions in controls and PTSD patients.

Condition Controls
Mean (SD)
Patients
Mean (SD)
mu 50/50 344.9 (41.2) 320.0 (76.3)
mu 90/10 291.0 (47.0) 268.3 (106.2)
sigma 50/50 40.4 (13.9) 47.0 (25.2)
sigma 90/10 33.7 (12.6) 44.2 (28.2)
tau 50/50 62.5 (19.1) 76.9 (34.8)
tau 90/10 59.0 (24.7) 74.6 (52.9)

Note: The means (standard deviations) are in msec. The parameters are mu (µ = mean of normal distribution), sigma (σ = SD of normal distribution), and tau (τ = mean and SD of the exponential tail).

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