Roman Rozengurt , Alexandra Doljenko , Daniel A. Levy , Avi Mendelsohn
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引用次数: 0
Abstract
Memory consolidation processes have been shown to benefit from modulations in brain activity, particularly theta oscillations. Our previous studies showed that increases in post-learning Theta/Beta power ratio improves subsequent performance in both procedural and declarative memory across various tasks. In this study, we investigated the role of increases in frontal-midline Theta/Beta power ratio using EEG neurofeedback (NFB) in enhancing spatial memory consolidation during a navigation task in a virtual Minecraft environment. Sixty-four participants were randomly assigned to one of three groups: Theta/Beta NFB, Beta/Theta NFB, or a passive control group. Following spatial memory acquisition and three memory tests in the virtual environment, participants underwent a neurofeedback intervention designed to either upregulating or downregulate the Theta/Beta power ratio. Performance was assessed immediately post-intervention, 24 h later, and one week after the intervention. Results indicate that while some participants failed to regulate their Theta/Beta power by using the NFB display, those who increased their Theta/Beta power ratio, regardless of NFB, showed improved spatial memory, reflected in faster task completion times. Conversely, participants who exhibited a decrease in Theta/Beta ratio showed performance declines, while the passive control group showed minimal improvement. Although all participants improved over time, participants who increased Theta/Beta ratio showed the most substantial gains. These findings highlight the importance of post-learning Theta/Beta ratio oscillations in spatial memory consolidation. The study’s implications extend to clinical neuromodulation applications and a deeper understanding of memory processes.
期刊介绍:
Neurobiology of Learning and Memory publishes articles examining the neurobiological mechanisms underlying learning and memory at all levels of analysis ranging from molecular biology to synaptic and neural plasticity and behavior. We are especially interested in manuscripts that examine the neural circuits and molecular mechanisms underlying learning, memory and plasticity in both experimental animals and human subjects.