Repeated ASE increased FosB/ΔFosB in striatum and shell of the nucleus accumbens.
CMS lowered ASE effect on FosB/ΔFosB in striatum and shell of the nucleus accumbens.
CMS itself did not affect FosB/ΔFosB expression in any of structures investigated.
Highest FosB/ΔFosB expression was seen in prefrontal cortex and lowest in septum.
ASE-induced FosB/ΔFosB may take part in brain persisting region-specific changes.