Development the procedure for assessing mild cognitive impairment in thai older adult by using multi -task incorporating electroencephalography measurement
Abstract:
The assessment of cognitive impairment has possessed limitations in terms of theory incompatibility and ignoring specific assessments of cognitive impairment-related cognitive processes. The objectives of the research were to develop the procedure for assessing cognitive impairment in Thai older adults by using multi-task incorporating electroencephalography measurement and to compare the brainwaves observed while working on the multi-task computerized program for three groups of older adults. The participants were 90 volunteers from Saen Suk Subdistrict, Meuang District, Chonburi, aged between 60-80 years old. The research instruments were Clinical Dementia Rating, MiniMental State Examination-Thai version, and Neuroscan Systems. Data were analyzed by means of ANCOVA and Effect Size. The results were as follows: 1) The multi-task computerized program for assessing cognitive impairment in Thai older adults was divided into three tasks, that is, task 1: auditory & visual Stroop interference, task 2: memory recognition (picture), and task 3: memory recognition (sound). The multi-task computerized program was assessed by experts and suitable for use. 2) The cumulative proportions of the response accuracy for task 1: auditory & visual Stroop interference and task 3: memory recognition (sound) was found to be significantly different at the .05 level and the mean response times for three tasks of the multi-task computerized program were not different. 3) The mean EEG relative power while working on the multi-task computerized program for assessing cognitive impairment was found to be significantly different for beta wave at the left temporal lobe and gamma wave at temporal lobe. 4) The mean amplitudes and latencies of N200 and P300 ERPs were found to be significantly different for older adults with different levels of cognitive impairment at frontal, central, parietal, and temporal lobes, that is, FZ, F5, CP5, P5, P6, T7, and T8 electrode sites.