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. Author manuscript; available in PMC: 2011 Jan 15.
Published in final edited form as: Biol Psychiatry. 2010 Jan 15;67(2):101–109. doi: 10.1016/j.biopsych.2009.08.021

Table 7.

Mean (SD) Neuropsychological Testing Scores Before and After 20 (± 9) Weeks of Epidural Prefrontal Cortical Electrical Stimulation Therapy

Baseline Mean Score (SD) Follow-up Mean Score (SD) t df p
Choice Reaction Test (No. Correct) 58.80 (1.30) 50.80 (20.02) .86 4 .437
Choice Reaction Test (msec) 836.08 (432.68) 508.72 (322.89) 1.22 4 .288
Choice Reaction Test (No. Incorrect) 1.20 (1.30) 9.20 (20.02) –.86 4 .437
Simple Reaction Time (msec) 402.40 (138.80) 361.82 (96.53) 1.50 4 .208
Continuous Performance Task (No. False Alarms) 3.00 (2.45) 3.75 (.96) –.57 3 .608
Continuous Performance Task (False Alarm Time—msec) 602 (90.39) 625.37 (183.61) –.23 2 .839
Continuous Performance Task (No. Hits) 18.75 (7.09) 21.50 (6.03) –2.48 3 .089
Continuous Performance Task (Hit Time—msec) 536.21 (30.23) 519.59 (45.65) .52 3 .640
Cognitive Failures Test 51.25 (10.50) 37.75 (18.37) 1.61 3 .206
Modified Mini-Mental Status Examination (Total Score) 60.25 (6.95) 63.50 (.58) –.89 3 .437