New Thinking: Advances in the Study of Human Cognitive Evolution
Oxford University
11 episodes
7 months ago
In primates and humans alike, the number of social relationships an individual can have is constrained in part by its social cognitive competences and in part by the time available to invest in face-to-face interaction. I will show that time, in particular, has a significant effect on the quality and stability of social relationships. If the quality of a relationship is a function of the time invested in it, then we might expect a technology that allows an individual to cut through the time constraints inherent in face-to-face interaction will allow larger social networks to be maintained. Social networking media on the Internet provide one obvious possibility in this respect. I will review evidence suggesting that the Internet does not (and cannot) help us to widen our social horizons, and will show why. Presented by Robin Dunbar (Anthropology, University of Oxford, UK). Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/
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In primates and humans alike, the number of social relationships an individual can have is constrained in part by its social cognitive competences and in part by the time available to invest in face-to-face interaction. I will show that time, in particular, has a significant effect on the quality and stability of social relationships. If the quality of a relationship is a function of the time invested in it, then we might expect a technology that allows an individual to cut through the time constraints inherent in face-to-face interaction will allow larger social networks to be maintained. Social networking media on the Internet provide one obvious possibility in this respect. I will review evidence suggesting that the Internet does not (and cannot) help us to widen our social horizons, and will show why. Presented by Robin Dunbar (Anthropology, University of Oxford, UK). Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/
Cortico-cerebellar Evolution and the Distributed Neural Basis of Cognition
New Thinking: Advances in the Study of Human Cognitive Evolution
45 minutes
14 years ago
Cortico-cerebellar Evolution and the Distributed Neural Basis of Cognition
Biologists interested in cognitive evolution have focussed on the dramatic expansion of the forebrain, particularly the neocortex, in lineages such as primates. Another structure, however - the cerebellum - contains four to five times more neurons than the neocortex, is massively and reciprocally inter-connected with it via intermediate nuclei, has complex cognitive and learning functions, and yet has been largely ignored in accounts of cognitive evolution. This talk explores the correlated evolution and ontogeny of neocortex, cerebellum and associated structures and the implications of such patterns for understanding the neural basis of cognition. Consistent with the idea of embodied cognition, brain size is associated with specific sensory-motor specializations. The results emphasize the importance of considering how individual brain regions are embedded within a neural architecture, and potentially reconcile adaptationist and associationist perspectives as applied, for example, to mirror neurons. Presented by Robert Barton (Anthropology, Durham University, UK). Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/
New Thinking: Advances in the Study of Human Cognitive Evolution
In primates and humans alike, the number of social relationships an individual can have is constrained in part by its social cognitive competences and in part by the time available to invest in face-to-face interaction. I will show that time, in particular, has a significant effect on the quality and stability of social relationships. If the quality of a relationship is a function of the time invested in it, then we might expect a technology that allows an individual to cut through the time constraints inherent in face-to-face interaction will allow larger social networks to be maintained. Social networking media on the Internet provide one obvious possibility in this respect. I will review evidence suggesting that the Internet does not (and cannot) help us to widen our social horizons, and will show why. Presented by Robin Dunbar (Anthropology, University of Oxford, UK). Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/
