This study looks at ways to help older adults who have trouble with their memory or thinking. We use two methods: Digital Cognitive Training (DCT), which is like brain games on a computer, and Transcranial Alternating Current Stimulation (tACS), which involves a gentle electrical current to the brain. Participants will do 5 sessions, each lasting 30 minutes. During these sessions, they will use the BrainHQ platform while receiving tACS, which targets a specific part of the brain linked to thinking skills.

Key Points:

• The study involves 5 daily sessions, each 30 minutes long.
• Participants must be over 50 years old with memory complaints.
• Certain conditions like severe psychiatric issues or using a pacemaker disqualify participation.

This study aims to see if these methods can safely and effectively improve memory and thinking. Researchers also want to understand how these treatments work in the brain. Participants should not have severe health issues like seizures or use devices that might interfere with the study.