A bold reality check: our breathing does more than keep us alive—it subtly tunes how memories form and are retrieved. This is the essence of a new study showing that the rhythm of respiration shapes memory processing, not just oxygen intake. Researchers from LMU, led by Dr. Thomas Schreiner, with collaborators from the Max Planck Institute for Human Development and the University of Oxford, explored how breathing influences retrieving learned associations and what the brain does during that retrieval.
In the experiment, 18 participants learned 120 image-word pairs. Later, they attempted to recall these pairings, including after a two-hour nap, while researchers tracked breathing and brain activity with EEG. The findings reveal that cue reminders were most effective when presented during or just before inhalation. Yet, the actual memory reconstruction tended to occur during exhalation. This points to a functional division: inhalation is ideal for receiving a cue, while exhalation is optimal for reconstructing the memory in the brain. In short, the respiratory rhythm actively shapes when perception and memory retrieval best align.
Two EEG signatures distinguished successful recall. First, a reduction in alpha and beta brainwave activity suggested engaged retrieval and focused processing. Second, memory reactivations appeared—neural patterns present during learning resurfacing during successful recall. Importantly, participants performed the task with their natural breathing, without deliberate respiratory control.
The researchers acknowledge limitations and future directions. As first author Esteban Bullón Tarrasó notes, it remains to be seen whether directed changes to breathing could boost everyday memory strategies. Additional work is also needed to understand how these mechanisms operate with older memories. Individual differences emerged: some people showed tighter coupling between respiration and memory-related brain activity, implying that breath and brain synchronize more efficiently for some than for others. Overall, respiration may act as a natural memory pacemaker, illustrating a tangible link between bodily rhythms and cognitive processes.
Source: Journal of Neuroscience, 2025. Staudigl, T., et al. Respiration shapes the neural dynamics of successful remembering in humans. Journal of Neuroscience. doi: 10.1523/jneurosci.1221-25.2025. https://www.jneurosci.org/content/early/2025/11/26/JNEUROSCI.1221-25.2025
