Lateralización cerebral en chimpancés: una aproximación filogenética al estudio del cerebro humano.

The study of cerebral lateralization in non-human primates is essential to understand humans' cerebral and cognitive hominization as well as language phylogeny. With respect to our closest relative, there is currently no consensus on whether chimpanzees show functional asymmetries comparable to those in humans'. One of the behaviours that has generated more controversy in the last decades is handedness. From this approach, the paper undertakes an extensive review on the main theoretical models: continuist, ‘rupturist’, and integrative. The evolutionary and cognitive implications of handedness on the human brain are also discussed. The comparative study of animal behaviour from an ethological-psychological perspective is considered essential to understand the behavioural and cerebral hominization process, providing a causal, functional, ontogenetic, and evolutionary viewpoint of the brain.