Human Structural Plasticity at Record Speed

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Human Structural Plasticity at Record Speed Heidi Johansen-Berg, Cassandra Sampaio Baptista, Adam G. Thomas Neuron Volume 73, Issue 6, Pages 1058-1060 (March 2012) DOI: 10.1016/j.neuron.2012.03.001 Copyright © 2012 Elsevier Inc. Terms and Conditions

Figure 1 Possible Tissue Changes that Could Cause a Decrease in Water Diffusivity A decrease in water diffusivity could reflect a number of different tissue changes, but not all could occur on the timescale observed in Sagi et al. (2012). Some candidate changes are illustrated here. Neurons are in purple, vasculature in red, and astrocytes in orange. (A and B) (A) illustrates the baseline state. (B) shows the swelling of astrocytes in the presence of increased activity—a process that can occur over a course of seconds to minutes. (C) Synapses (black circles) and their associated dendritic spines can be formed or modified over a period of minutes to hours. (D) More elaborate structural change such as dendritic sprouting, neurogenesis, and angiogenesis occurs over a period of days to weeks. Neuron 2012 73, 1058-1060DOI: (10.1016/j.neuron.2012.03.001) Copyright © 2012 Elsevier Inc. Terms and Conditions