About this trial
This project optimizes high-resolution tACS to improve memory in healthy older adults, advancing drug-free approaches for ADRD. We test stimulation schedules and develop an adaptive, brain-guided tACS system to strengthen memory-supporting networks.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
65 years of age or older
normal or corrected-to-normal vision
color vision
Disqualifiers
pregnant
metal implants in head
implanted electronic devices
history of neurological problems or head injury
Trial design
Crossover
Treatments tested in this trial
Peak Frequency
DeviceDevice: High definition transcranial electrical current stimulation Low-intensity, noninvasive application of electrical current to the human scalp tailored to individual peak frequency with the goal of modulating levels of neuronal excitability.
Phase Lag
DeviceDevice: High definition transcranial electrical current stimulation Low-intensity, noninvasive application of electrical current to the human scalp tailored to individual phase lag with the goal of modulating levels of neuronal excitability.
Peak Frequency + Phase Lag
DeviceDevice: High definition transcranial electrical current stimulation Low-intensity, noninvasive application of electrical current to the human scalp tailored to individual peak frequency and phase lag with the goal of modulating levels of neuronal excitability.
Non-Adpative
DeviceDevice: High definition transcranial electrical current stimulation Low-intensity, noninvasive application of electrical current to the human scalp not tailored to individual peak frequency or phase lag with the goal of modulating levels of neuronal excitability.
Treatment groups
Trial outcomes
Primary outcomes
EEG phase locking value (PLV) during working memory retention
Phase locking value between frontotemporal EEG electrodes within the theta frequency band during the memory retention interval of the visual working memory task
Interruption suppression measured behaviorally
Memory accuracy performance difference between interruption and control trials on the interruption working memory task
EEG phase amplitude coupling (PAC) during working memory retention
Theta phase gamma amplitude cross-frequency coupling at temporal EEG electrodes during the memory retention interval of the visual working memory task
Locations
Sponsors and contacts
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