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| a condition in which vision in one eye is reduced as a result of disuse; usually caused by a failure of the two eyes to point in the same direction |
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| failure of the forebrain to develop |
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| cell death that is genetically programmed |
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| a chemical to which specific cells can adhere, thus aiding in migration |
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| proposal that neurons or their axons and dendrites are drawn toward a signaling chemical that indicates the correct pathway |
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| developmental "window" during which some event has a long-lasting influence on the brain; often referred to as a sensitive period |
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| process at the end of a developing axon that reaches out to search for a potential target or to sample the intercellular environment |
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| product of a progenitor cell that gives rise to different types of glial cells |
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| sporadic period of sudden growth that lasts for a finite time |
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| process that predisposes an animal to form an attachment to objects or animals at a critical period in development |
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| process by which exposure to androgens (male hormones) alters the brain, rendering it identifiably male |
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| the only class of tropic molecules yet isolated |
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| hypothesis that the processes of cell death and synaptic pruning are, like natural selection in species, the outcome of competition among neurons for connections and metabolic resources in a neural environment |
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| thickened region of the ectodermal layer that gives rise to the neural tube |
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| a self-renewing, multipotential cell that gives rise to any of the different types of neurons and glia in the nervous system |
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| structure in the early stage of brain development from which the brain and spinal cord develop |
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| product of a progenitor cell that gives rise to any of the different types of neurons |
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| a chemical compound that acts to support growth and differentiation in developing neurons and may act to keep certain neurons alive in adulthood |
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| progenitor (precursor) cell |
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| precursor cell derived from a stem cell; it migrates and produces a neuron or a glial cell |
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| path-making cell that a migrating neuron follows to its appropriate destination |
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| signaling molecule that attracts or repels growth cones |
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| lining of neural stem cells surrounding the ventricles in adults |
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