Patients with Mild Cognitive Impairment Display Reduced Auditory Event-Related Delta Oscillatory Responses

Figure 2

Histograms and grand averages of oscillatory delta (0.5–2.2 Hz) responses. (a) Histograms of mean grand averages of F₃, F_z, F₄, C_z, C₄, and P_z electrode sites in delta (0.5–2.2 Hz) frequency range for 300–800 msec poststimulus. “*” represents significant results with 𝑃<0.05 and “**” represents significant results with 𝑃<0.01. (b) Grand averages of delta (0.5–2.2 Hz) oscillatory responses of healthy controls (𝑛=21) and mild cognitive impairment (MCI) subjects (𝑛=22).

(a)

(b)