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Showing 1 - 3 of
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Metals: Methylmercury Neurotoxicity and its Uptake Action Across
the BloodBrain Barrier (M. Aschner et al.). Neurotoxic Metals and
Neuronal Signalling Processes (D. Minnema). Lead Poisoning,
Toxocariasis and Pica (P.J. Donovick, R.G. Burright). Nocardia
(B.L. Beaman). Toxicants: Neurotoxicity of Polychlorinated
Biphenyls (R.F. Seegal, W. Shain). Central Nervous System
Plasticity and Pathology Induced by Exposure to Organophosphate
Pesticides (D.H. Overstreet, G. Schiller). Silver Ipregnation of
OrganophosphorusInduced Delayed Neuropathy in the Central Nervous
System (D. Tanaka et al.). Selected Mechanisms of Action: Acute and
Chronic Neurodegenerative Disorders Produced by Dietary
Excitotoxins (C.F. Zorumski, J.W. Olney). Formation of Excess
Reactive Oxygen Species Within the Brain (S.C. Bondy, C.P. LeBel).
Legal Issues: Courts, Agencies, and Social Risk Assessment (C.P.
Gillette, J.E. Krier) 7 additional articles. Index.
Malnutrition: Malnutrition and the Developing Central Nervous
System (P.J. Morgane et al.). Prolonged Dietary Restriction and its
Effects on Dopamine Systems of the Brain (F.M. Scalzo). Dietary
Factors that Influence the Neural Substrates of Memory (G.L. Wenk).
Neurotoxins in Herbs and Food Plants (R.J. Huxtable). Malnutrition
and the Vulnerable Brain (R.W. Russell). Methods: The Evaluation of
Behavioral Changes Produced by Consumption of Environmentally
Contaminated Fish (H.B. Daly). Animal Models of Cognitive
Development in Neurotoxicity (M.E. Stanton). Neurotoxicants and
Limbic Kindling (M.E. Gilbert). Testing Visual System Toxicity
Using Visual Evoked Potentials (W.K. Boyes). The Use of Selective
Silver Degeneration Stains in Neurotoxicity (C.D. Balaban). Caveats
in Hazard Assessment (D.B. Miller). Index.
What we know about the world and its opportunities limits what we
do. If we do not know that there is a pot of gold at the end of the
rainbow, we will not follow it. If we do not know that a desert
cactus contains water, we will not cut into it for sustenance.
Often, however, we do know things about the world and yet the
knowledge does not seem to be reflected in behavior. Explaining
this fact simply in terms of inadequate motivation for expression
or incomplete memory for the important in formation does not really
add much to our understanding. The ex pression of knowledge can be
interrupted in very special ways by a variety of more specific
conditions-fatigue, sources of forgetting that may include failure
of memory retrieval, emotion, and various dysfunc tions of brain
and body systems-that are not satisfactorily incorporated by any
current theories of motivation or memory. Also, a dissociation
between knowledge and its expression can take the form of applying
knowledge without apparent awareness of this action, a phenomenon
that requires complicated assumptions for explanation in terms of
either motivation or memory. Dissociations between knowledge and
action may be striking. After driving home on a familiar route we
may not be able to report whether the last three traffic lights
were red or green; yet we must have re sponded appropriately to
them.
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