Noninvasive modulation of the hippocampal-entorhinal complex during spatial navigation in humans

Authors
Beanato, ElenaMoon, Hyuk-JuneWindel, FabienneVassiliadis, PierreWessel, Maximillian J.Popa, TraianPauline, MenoudNeufeld, EsraDe Falco, EmanuelaGauthier, BaptisteSteiner, MelanieBlanke, OlafHummel, Friedhelm C.
Issue Date
2024-10
Publisher
American Association for the Advancement of Science
Citation
Science Advances, v.10, no.44
Abstract
Because of the depth of the hippocampal-entorhinal complex (HC-EC) in the brain, understanding of its role in spatial navigation via neuromodulation was limited in humans. Here, we aimed to better elucidate this relationship in healthy volunteers, using transcranial temporal interference electric stimulation (tTIS), a noninvasive technique allowing to selectively neuromodulate deep brain structures. We applied tTIS to the right HC-EC in either continuous or intermittent theta-burst stimulation patterns (cTBS or iTBS), compared to a control condition, during a virtual reality?based spatial navigation task and concomitant functional magnetic resonance imaging. iTBS improved spatial navigation performance, correlated with hippocampal activity modulation, and decreased grid cell?like activity in EC. Collectively, these data provide the evidence that human HC-EC activity can be directly and noninvasively modulated leading to changes of spatial navigation behavior. These findings suggest promising perspectives for patients suffering from cognitive impairment such as following traumatic brain injury or dementia.
URI
https://pubs.kist.re.kr/handle/201004/150913
DOI
10.1126/sciadv.ado4103
Appears in Collections:
KIST Article > 2024
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