Brain Electrophysiological Recording during Olfactory Stimulation in Mild Cognitive Impairment and Alzheimer Disease Patients: An EEG Dataset
Description
A total of 44 healthy elderly and MCI and AD patients participated in this experiment. The data of 6 participants were removed from further processing due to issues with EEG data recording, history of stroke, or traumatic brain injuries. Also, participants with any history of olfactory dysfunction were excluded from the study. The remaining 35 participants (age = 70.97±8.58, female = 57.14%) included 15 healthy (normal) individuals (age = 69.27±6.65, female = 53.33%), 7 MCI patients (age = 66.57±6.85, female = 51.14%), and 13 AD patients (age = 75.31±9.90, female = 61.54%). An olfactory oddball perception task was performed on the participants. During this task, each participant was presented with a random sequence of two different odors. The sequence of odors was the same for all participants. One odor (lemon) was presented frequently (standard) with a probability of 0.75 and the other odor (rose) was presented non-frequently (deviant) with a probability of 0.25.