Clinical Trial

Brain-Stimulation on Metamemory Monitoring and Control

Study Description

Effects of Brain-stimulation on Metamemory Monitoring and Control

Sometimes when people fail to recall information, they nevertheless have a feeling-of-knowing that the sought after information resides in their memory. These subjective feelings often correlate with later memory, but sometimes feeling of knowing judgments are incorrect (i.e., people have a feeling-of-knowing but don't remember the information later or lave a low feeling-of-knowing and remember the information later. The investigators have previously shown that applying high definition transcranial direct current stimulation (HD-tDCS) over the dorsolateral prefrontal cortex leads to more accurate feeling-of-knowing judgments. Accurate feeling-of-knowing judgments are useful in that they may later subsequent behavior. For example, individuals who have a feeling-of-knowing about the answer to a general knowledge question will continue to search their memory, whereas individuals who do not have a feeling-of-knowing will stop searching their memory. In this experiment, the investigators test the hypothesis that improving memory awareness via HD-tDCS over the DLPFC leads to improved control of memory. The approach taken is to have participants visit the lab on 3 separate occasions where they receive 3 different HD-tDCS protocols while completing a feeling-of-knowing, metamemory control, and recognition tasks: HD-tDCS over the DLPFC during the feeling-of-knowing task, HD-tDCS over the DLPFC after the feeling-of-knowing task, and sham HD-tDCS during the feeling-of-knowing task. To test metamemory control, participants are asked to select a subset of general knowledge questions that they would like to receive a hint about the answer. The expectation is that if individuals make more accurate feeling-of-knowing judgments, then they will make better choices about which items they would like to receive a hint for, thereby improving their overall memory performance.

Location

Locations Selected Location

Methods

No pharmaceutical medication involved No pharmaceutical medication involved
Patients and healthy individuals accepted Patients and healthy individuals accepted

Device - HD-tDCS

Participants will complete a metamemory and memory task

Additional Information

Official Study Title

Effects of Brain-stimulation on the Feeling-of-knowing and Hint Choices

Clinical Trial ID

NCT03693729

ParticipAid ID

eXDrWe