What is it about?

We used the cross-fostering technique to analyze the role of maternalñ care on spontaneous and dopmainergic-induced yawning and penile erections

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Why is it important?

Dopamine neurotransmitter paly a significant role in various physiological responses such as reward, food ingestion, neuroendocrine and several behaviiors.


Addiciton is a growing problem in actual society. Animasl models allow us to determine the genetic and epigenetic causes of this neurological problems. Low-yawning rats are susceptoible to stress and anxiety and the opposite trait is excpressed by high-yawning rats.

Dr. Jose R. Eguibar
Benemerita Universidad Autonoma de Puebla

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This page is a summary of: Yawning and Penile Erection Frequencies Are Resilient to Maternal Care Manipulation in the High-Yawning Subline of Sprague–Dawley Rats, Frontiers in Behavioral Neuroscience, March 2020, Frontiers,
DOI: 10.3389/fnbeh.2020.00020.
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