Mouse study links corticohypothalamic circuit to waking from pup calls

Sleeping female mice awaken in response to ultrasonic vocalizations, or USVs, produced by their pups, and a study in Nature Neuroscience identifies a corticohypothalamic circuit involved in this response. The findings point to layer 6 neurons in the temporal association and ectorhinal cortices, abbreviated TeA/Ect, that project to the preoptic area, or POA. The researchers report that disrupting this pathway reduced the awakening triggered by pup calls, showing that it mediates the behavioral response in the mouse experiments rather than merely correlating with it.

The investigators found that these USVs preferentially disrupted sleep in dams and that selected USVs reliably triggered arousal from non-rapid-eye-movement sleep. They then focused on the POA, where a population of neurons responded to pup USVs. Experimental evidence indicated that these USV-responsive POA neurons mediate pup-USV-induced awakening, linking a preoptic response to the transition from sleep to wakefulness.

The work addresses arousal itself; the supplied findings do not establish that waking through this circuit leads to any particular subsequent caregiving action. The TeA/Ect-to-POA pathway mediated pup-USV-induced maternal awakening, whereas awakening induced by non-social sounds was independent of that pathway. This selectivity is a central part of the reported result: in the tested conditions, the circuit was required for the response to pup vocalizations but not for the response to the comparison sounds.

The experiments therefore support a specialized role for the pathway in processing pup-related auditory cues, rather than showing that it mediates arousal from sound in general. Motherhood was associated with a change in how strongly the circuit responded. After dams transitioned to motherhood, TeA/Ect layer 6 neurons projecting to the POA showed enhanced responsiveness to pup calls.

The researchers linked this increase to greater expression of the dopamine D1 receptor gene, Drd1 , in the TeA/Ect-to-POA neurons. Further experiments showed that D1-expressing TeA/Ect layer 6 neurons mediated pup-USV-induced maternal awakening. The authors also traced an upstream route by which information about pup calls reaches the cortex.

They identified a pathway from the auditory thalamus to layer 6 TeA/Ect neurons and found that thalamic TeA/Ect-projecting neurons preserve responsiveness to pup USVs during non-rapid-eye-movement sleep. This provides a possible circuit-level route for a pup vocalization to be processed while a dam is asleep and then influence arousal through the corticohypothalamic pathway. The work was conducted in mice, and its conclusions are limited to the animals, sounds and experimental conditions tested.

Although the researchers describe the circuit as a possible fundamental adaptation for caregiving across mammals, the supplied evidence does not show that the same pathway, receptor dependence or behavioral effect operates identically in humans or other mammalian species.

Subject of Research: Neural mechanisms of maternal awakening to pup ultrasonic vocalizations in mice

Article Title: A corticohypothalamic circuit that mediates maternal awakening to pup cries

Article References: Tang, P., Wu, K., Pan, Y., Yang, S., Cai, Z., Liang, Y., Mai, F., Chen, P., Peng, M., Wang, Y., Chen, X., Song, C., Ji, X., & Liang, F. (2026). A corticohypothalamic circuit that mediates maternal awakening to pup cries. Nature Neuroscience. https://doi.org/10.1038/s41593-026-02458-y

Image Credits: AI Generated

DOI: 10.1038/s41593-026-02458-y

Keywords: maternal sleep, pup vocalizations, mouse neuroscience, corticohypothalamic circuit, preoptic area, temporal association cortex, ectorhinal cortex, dopamine D1 receptor, auditory thalamus, sleep arousal, corticohypothalamic, circuit