stress. The study, conducted by a team at the Cumming School of Medicine's
Hotchkiss Brain Institute (HBI), at the University of Calgary suggests that stress in
one person can alter the brain of another person the same way that real stress does.
Using a mouse model, the study also indicated that the effects of stress on the brain
were reversed in female mice after a social interaction. However, this was not the case
for the male mice.
to its partner who had not been exposed. They responses of CRH neurons which
control the brain’s reaction to stress were then examined in both mice. It was found
that the brains of both mice were affected in exactly the same way.
with stress are thought to underlie many mental disorders including PTSD, depression
and anxiety disorders. It is not known at this time whether stress experienced through
contagion has lasting or permanent effects on the brain.
outcomes of these relationships can be long-lasting. They may alter our emotions,
physiology, neurology and behaviors over a lengthy period or the effects may resurface
at a later time. The degree to which the changes may be irreversible is unclear and the
question needs further study.
Nuria Daviu, Neilen P. Rasiah, David Rosenegger, Jaideep S. Bains (2018). Social
transmission and buffering of synaptic changes after stress. Nature Neuroscience.