I wonder, what about the amygdalas of dogs and cats?

domesticated dogs would be interesting....

google says the main diff is gene expression in the hypothalamus in terms of wolf vs. dog.

temporal lobe is famous for memory and maybe navigation.. higher cognitive functions are more often put up front..?

now that i look.. the authors of the amygdala study aren't all that fond of the prefrontal cortex story for humans.

We tested this idea and found that humans have only 2% plusminus 28 more prefrontal white matter than expected for a primate of similar prefrontal gray matter volume (Fig. 1b). On the basis of a prediction calculated from only great ape data, the human values are actually 17% plusminus 35 lower than expected. Given these results, it is difficult to make a strong claim for the evolution of specialized human enlargement of prefrontal white matter beyond simple allometric scaling to maintain functional interconnectedness at a larger overall brain size. Specialization of cortical neuron types8 and elevated gene expression associated with metabolism and synaptic plasticity9 in humans suggest that subtle modifications of architecture, function and connectivity10 may have been critical in the evolution of human cognitive capacities.

I'm not sure why migration out of Africa has to be linked to GLF. Doesn't it seem more likely that this resulted from the need to expand hunting/gathering range, or from climate change/opening of a desert barrier to expansion?

Admittedly migration into New Guinea and Australia needed technological development suggesting an increase in cognitive ability, but the initial migration out of Africa would not seem to need it. Also, anatomically modern humans migrated out of Africa into the Middle East once previously (>100,000 years BP) but apparently failed to survive there in competition with H. neanderthalensis.

Increased cognitive ability and a more advanced tool kit, complex language, social development and better navigational ability may have made migration more successful, but would not seem to be a prerequisite to migration itself, or whatever prompted it.

And 50,000 years does seem on the low side - regardless of the Mungo interpretation, it is at least 45,000 years, which suggests 50,000 years BP for the initial expansion out of Africa is on the low side.