Mechanisms of Amygdala-Mediated Memory Enhancement in Humans

What this Trial Is About

Researchers are investigating how activation of the amygdala influences other parts of the medial temporal lobe to prioritize long-term memories. This research is important for understanding memory-related disorders, including traumatic brain injury and post-traumatic stress disorder. The study aims to explore the role of the basolateral complex of the amygdala (BLA) in enhancing declarative memory through electrical stimulation, revealing brain mechanisms linked to emotional arousal and memory enhancement. Participants are neurosurgical epilepsy patients who have electrodes implanted in specific brain areas related to memory. During the study, they will view images of emotionally neutral objects on a computer screen. After each image, they will randomly receive either active electrical stimulation of the BLA or a sham (inactive) stimulation. Memory for these items will be tested over subsequent days through recall and recognition tasks. Brain activity will be monitored to identify memory states, and future phases will involve closed-loop stimulation triggered by detected poor memory states. Participants will undergo monitoring of brain activity and memory performance during the study period, which spans up to five years for outcome measurement. Researchers will assess memory recall and recognition, as well as brain responses to stimulation, including evoked potentials and local field potentials. This detailed evaluation aims to understand how electrical stimulation affects memory processes. The total duration and follow-up provide comprehensive insight into memory enhancement mechanisms and their potential applications.

Amygdala Memory Enhancement