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Critical/Foundational support for this service is provided by the Leon Levy Foundation as part of the Shelby White & Leon Levy Archive Initiative at the American Museum of Natural History Library
American Museum of Natural History
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©2022 American Museum of Natural History
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Asset ID
JAL recording 2022
Title
Combinatorial Creatures: Cortical plasticity within and across lifetimes; 91st annual James Arthur Lecture on the Evolution of the Human Brain
Description
The neocortex is one of the most distinctive structures of the mammalian brain, yet also one of the most varied in terms of both size and organization. Multiple processes have contributed to this variability including evolutionary mechanisms (i.e., changes in gene sequence) that alter the size, organization and connections of the neocortex, and activity dependent mechanisms that can also modify these same features over shorter time scales. Because the neocortex does not develop or evolve in a vacuum, when considering how different cortical phenotypes emerge within a species and across species, it is also important to consider alterations to the body, to behavior, and the environment in which an individual develops. Thus, changes to the neocortex can arise via different mechanisms and over multiple time scales. Brains can change across large, evolutionary time scales of thousands to millions of years; across shorter time scales such as generations; and across the life of an individual–day by day, within hours, minutes, and even on a time scale of a second. The combination of genetic and activity dependent mechanisms that create a given cortical phenotype allows the mammalian neocortex to rapidly and flexibly adjust to different body and environmental contexts, and in humans permits culture to impact brain construction during development.
Date
2022-04-13
Agent (Role)
American Museum of Natural History
(
Producer
),
Krubitzer, Leah, 1961-
(
Contributor
)
Repository
American Museum of Natural History
Rights Statement
Information on rights available at repository
Is Part Of
James Arthur Lecture on the Evolution of the Human Brain