Table 2.

Cognitive test battery for assessing cognitive function in CABG patients.

Cognitive tests and indicators	Description of the procedure
Complex visual-motor reaction Reaction time, ms Errors, n	Reaction latencies of the right and left hands to stimuli (different colors of rectangles) when the subject should choose one of the three presented signals (the number of signals in the test is 30)
Level of functional mobility of nervous processes responses to "feedback" Reaction time, ms Errors, n Missed signals, n	The previous test is conducted in the feedback mode. The duration of the exposure to the test signal (see above) is changed automatically; the exposure of the next signal is shortened by 20 ms with each correct answer and extended by 20 ms, if the answer is wrong (the number of signals in the test is 120)
Performance of the brain responses to "feedback" Reaction time, ms Errors, n Missed signals, n	The previous test is conducted in the feedback mode for a fixed period (5 min). It is necessary to process the maximum number of signals presented with a given exposure
The Bourdon's test Processed symbols per 1 min, n Processed symbols per 4 mins, n	The subject is provided with the alphabetic version of the Bourdon's test to highlight certain letters for the lead time of 4 mins
10 words memorizing test, n	To remember as many of 10 words presented one after another as possible
10 numbers memorizing test, n	To remember as many of 10 numbers presented one after another as possible
10 nonsense syllable memorizing test, n	To remember as many of 10 nonsense syllables presented one after another as possible

CABG=coronary artery bypass grafting