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<p><b>Objective. </b>To study the effects of coronary artery disease (CAD) on the frequency-spatial organization of the electroencephalogram (EEG) in patients with intact cognitive status and patients with cognitive impairment. <b>Materials and methods.</b> The study involved 132 patients with stable CAD and 63 essentially healthy elderly individuals. All patients underwent neuropsychological screening, and the results were used to divide them into two groups: patients without cognitive impairment (CI) (Montreal Cognitive Assessment (MoCA) scores of 27–30 (<i>n</i> = 37)) and patients with CI (MoCA scores of 20–26 (<i>n</i> = 95)). Patients and healthy participants also underwent high-resolution EEG. <b>Results.</b> Groups of patients with coronary heart disease with and without CI and healthy elderly individuals could be differentiated in terms of the frequencies of the θ1, θ2, and α2 rhythms, with local differences in the power of θ1 biopotentials, and global differences for the θ2 and α2 ranges. <b>Conclusions.</b> The results presented here demonstrate that patients with coronary heart disease and cognitive impairments exhibit characteristic features of the frequency-spatial organization of brain bioelectric activity as compared with elderly individuals without clinical signs.</p>

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EEG Frequency and Spatial Characteristics in Patients with Coronary Artery Disease with Preserved Cognitive Status and Cognitive Disorders

  • 期刊论文

  • 发表日期：

    2026年7月27日

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  • I. V. Tarasova,
  • D. S. Kupriyanova,
  • E. Yu. Privodnova,
  • I. N. Kukhareva,
  • I. D. Syrova,
  • O. A. Trubnikova,
  • N. V. Volf

摘要

Objective. To study the effects of coronary artery disease (CAD) on the frequency-spatial organization of the electroencephalogram (EEG) in patients with intact cognitive status and patients with cognitive impairment. Materials and methods. The study involved 132 patients with stable CAD and 63 essentially healthy elderly individuals. All patients underwent neuropsychological screening, and the results were used to divide them into two groups: patients without cognitive impairment (CI) (Montreal Cognitive Assessment (MoCA) scores of 27–30 (n = 37)) and patients with CI (MoCA scores of 20–26 (n = 95)). Patients and healthy participants also underwent high-resolution EEG. Results. Groups of patients with coronary heart disease with and without CI and healthy elderly individuals could be differentiated in terms of the frequencies of the θ1, θ2, and α2 rhythms, with local differences in the power of θ1 biopotentials, and global differences for the θ2 and α2 ranges. Conclusions. The results presented here demonstrate that patients with coronary heart disease and cognitive impairments exhibit characteristic features of the frequency-spatial organization of brain bioelectric activity as compared with elderly individuals without clinical signs.