The role of acetylcholine and central catecholamines in modulating aversively motivated behaviors, and behavior following exposure to uncontrollable stressors, is evaluated. (Editor)

A hemispheric specialization of function paradigm was used to test cognitive skill and cognitive style in learning disabled and "normal" boys between the ages of 7 and 12. Discussion emphasizes the need for more information on nonverbal processing skills to aid in developing verbal representational systems. (JMB)

Bi-articular, unidirectional arm movements were studied to evaluate the electromyographic (EMG) and neuromuscular force patterns that occur when a limb is unexpectedly perturbed. A series of training trials were continued with a control load spring attached to the apparatus until a pre-specified criterion for learning was attained. The limb was…

The paper reviews research on cerebral hemispheric functioning and considers the implications for instruction of the deaf. The nature of right and left hemisphere function and communication is addressed, as are findings on cerebral asymmetry for aspects of language processing. Studies on hemispheric specialization of hearing impaired persons…

The human brain is lateralized, different functions being housed in each hemisphere. Several assumptions which are mistakenly considered fact by researchers include: (1) the left hemisphere is for rational functions, while the right is for intuitive functions; (2) the hemispheres do not interact as well with each other as they should; (3) the use…

This study investigates a negative component (N220) of visual evoked potential (VEP) which increases as certain cognitive processes are activated. Nine experimental conditions were designed by combining three stimulus and three task conditions. Letters were used as verbal stimuli, matrix patterns were used as nonverbal stimuli, and white light was…

Evidence that hemispheric asymmetry is present at birth comes from several sources: physical structure of the brain, hand preference, and responses to visual and auditory stimuli. In infancy, a hemisphere is activated only when exposed to an appropriate stimulus. Different stimuli seem to activate one hemisphere only, or at least one hemisphere…

An explanation of visual perception is presented using physiological facts, analogies to digital computers, and analogies to the structure of written languages. According to the explanation, visual input is discontinuous, with the discontinuities mediated by and correlated with the jumps of the eye. This is analogous to the gated and buffer-stored…

Describes recent neurophysical theories regarding the different functions of the brain's left hemisphere (linear, time-oriented, rational, and analytic) and right hemisphere (intuitive, artistic, and creative) and discusses their implications for management science. (Available from Office of Publications, Graduate School of Business…

Lateralization of response to the suggestion of a sensation was recorded in 100 psychiatric patients (16-60 years old) and related to their handedness. (Author)

Examines the auditory evoked potentials (AEP) in the left and right hemispheres of the brain in response to variations in voice onset time (VOT) differences within and between phoneme categories. Subjects were 12 preschool children. (BD)

A previously proposed model for memory based on neurophysiological considerations is reviewed. It is extended by introducing positive feedback of a set of neurons onto itself and allowing the neurons to saturate. The resulting model is analyzed by distinctive features, categorical perception, and as it applies to probability learning. (Editor/RK)

The Proster Theory of the way the brain works and of the factors that favor or inhibit learning should be useful in designing educational programs that reliably provide huge gains in learning. (Author/IRT)

This commentary, written in response to Witelson's work (1987), examines alternative ways of determining how the developmentally stable functional asymmetry (hemispheric specialization) observed in neurologically intact children can be reconciled with the dramatic recovery of function often displayed following unilateral brain damage. (PCB)

The physiological responses and adaptations which occur as a result of resistance training, such as cardiovascular responses, serum lipid count, body composition, and neural adaptations are discussed. Changes in the endocrine system are also described. (JL)