Matthias P. Schneider, Linh Dao-Phuong, Tariq H. Al-Mansouri
Synaptic plasticity is a cornerstone of neurobiological processes, essential for learning and memory formation. This study aims to elucidate the underlying mechanisms that govern synaptic plasticity through detailed examination of neuronal adaptation. We utilized advanced electrophysiological techniques and high-resolution imaging to monitor synapse behavior in both in vitro and in vivo models. Our findings reveal that long-term potentiation (LTP) and long-term depression (LTD) are significantly influenced by distinct calcium signaling pathways. Notably, the modulation of AMPA receptor trafficking and NMDA receptor activation plays a crucial role, with synaptic strength alterations quantified at approximately 40% ± 5% during LTP and 32% ± 4% during LTD phases (p < 0.01). The study further identifies specific gene expression changes related to synaptic efficacy, suggesting a bidirectional interplay between synaptic activity and genetic regulation. These findings enhance our understanding of synaptic plasticity mechanisms, offering potential pathways for therapeutic interventions in cognitive disorders. In conclusion, this research delineates the dynamic interactions at synaptic junctions, providing deeper insights into neuronal adaptability and plasticity.