These are H. sapiens fear circuits posited not to have existed in the early Paleolithic genus Homo (H. ergaster). It is posited that these circuits are thus firm-wired in a small percentage of extant humans primarily by common minor alleles which spread from single ancestral copies either during the mid Paleolithic (i.e., pre-FOXP2) or in the upper Paleolithic (i.e., post-FOXP2) EEA, in both cases primarily driven by mate-choice-related stabilizing selection

Neuroevolutionary Time-depths (H. sapiens):

∼ 200 Kya to ∼ 70 Kya (mid Paleolithic)

and ∼ 70 Kya to ∼ 12 Kya (upper Paleolithic)