Includes a general discussion of sports medicine including exercise and conditioning techniques, prevention of illness and injury, treatment of and rehabilitation after sports injury, and the future of sports medicine. (BB)

Discusses the neurobiological basis for functional specialization of the cerebral hemispheres, indicating that the size of the corpus callosum is correlated with the neurophysiological measure of hand preference. In postmortem examinations of 42 subjects there were no sex differences, but mixed-handers had significantly larger total areas of the…

Laments the neglect of discussion of active transport of plant nutrients from soil to root in general biology textbooks. (AL)

Examines the validity of the concept that the interaction of a single pollutant molecule with a cellular substance is necessarily associated with a deleterious result. Argues that such a no threshold" position is untenable. (AL)

Describes research on synergistic effects of alcohol and other drugs, particularly barbiturates. Proposes biochemical mechanisms to explain alcoholics' tolerance of other drugs when sober, and increased sensitivity when drunk. (AL)

New systems for analyzing large numbers of body fluid components can be used in the clinical laboratory. (Author/RH)

Provides comments on research studies related to memory systems, considering those exploring the nature of memory traces. One researcher suggests that memory trace circuits are extremely localized (as opposed to being diffuse), such that a lesion in a rabbit's brain can completely destroy the trace for a particular learned response. (JN)

Analogies can be useful in the study of behavior, physiology, and comparative evolution. Dangers in mistaking a homology for an analogy are discussed. (RH)

Proposes a hypothesis suggesting that parts of the central nervous system that contain norepinephrine and dopamine are dynamically interrelated under stressful conditions in a compensatory way. (MLH)

Discussed is the discovery which may help to explain epidermal growth factor effects on the cell skeleton. The role of a protein called profilin in the regulation of the microfilament system is described. (CW)

The concentration of the primary brain metabolite of norepinephrine is diminished in the lumbar spinal fluid of patients with Korsakoff's syndrome. The extent of its reduction is correlated with measures of memory impairment. (BB)

Presents a hypothesis about the biochemical processes involved in memory storage. The postulated mechanism is initiated by a signal that is unusual but not unlikely to occur and produces an irreversible change in a key component of synaptic chemistry. Other features of the mechanism and experiments supporting the hypothesis are considered. (JN)

Reviews the features of two classes of learning theories. Reports evidence supporting a statistical configuration" theory, suggesting that temporal patterns of neurophysiological waves in the average activity of extensive anatomical brain regions may constitute the basis of subjective experience. (AL)