Olfactory LearNap: olfactory stimulation during learning and nap to strengthen memorization in early childhood


This pilot study investigates whether olfactory stimulation, proposed during both learning and naps for children aged 2-3 years, can impact the consolidation of a mnemonic trace. Research demonstrates how sleep plays a central role in this process, and, in early childhood, promotes brain development. The sense of smell, active during sleep, supports learning and memory, due to the closely connections of olfactory bulb to the hippocampus and amygdala. It is quantitative experimental research that compares the acquisition of specific information before and after a language training protocol in two groups. The experimental group, who benefited from olfactory stimulation during both the learning and sleep phases, have revealed an average improvement of 23%, due to the hippocampal reactivation of the learned content facilitated by olfactory stimulation. This research demonstrates that intervention with olfactory stimuli can indeed lead to improvements in memorization in early childhood.