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Volumetric and asymmetry determinations on recent hominid endocasts: Spy I and II, Djebel Ihroud I, and the salè Homo erectus specimens, with some notes on neandertal brain size
Author(s) -
Holloway Ralph L.
Publication year - 1981
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330550312
Subject(s) - endocast , homo erectus , homo sapiens , brain size , paleoanthropology , geology , paleontology , biology , anatomy , skull , geography , pleistocene , archaeology , medicine , radiology , magnetic resonance imaging
Full brain endocast reconstructions of the Neandertals, Spy I and II, Djebel Ihroud I, and the Homo erectus specimen from Salè, Morocco have yielded accurate volumes. Spy I = 1,305 ml; Spy II = 1,553 ml; Djebel Ihroud I = 1,305 ml; Salè = 880 ml. While there are no remarkable gyral and sulcal patterns one can delineate, the brain endocasts do show evidence of left‐occipital, right‐frontal petalias, suggesting right‐handedness, and possibly human cognitive specialization, involving symbol processing and visuospatial integration. Some speculations regarding Neandertal brain size are also offered, in which it is suggested that their possibly larger brain sizes were related to greater muscularity than in modern Homo sapiens .