Synaptic plasticity is thought to contribute to memory formation. Serotonin-induced facilitation of sensory-motor (SN-MN) synapses in "Aplysia" is an extensively studied cellular analog of memory for sensitization. Serotonin, a modulatory neurotransmitter, is released in the CNS during sensitization training, and induces three temporally and…

Herbert Simon's work on bounded rationality has had little impact on researchers studying older adults' decision making. This omission is surprising, as human constraints on computation and memory are exacerbated in older adults. The study of older adults' decision-making processes could benefit from employing a bounded rationality perspective,…

Involuntary mental rehearsal of foreign language words, sounds, and phrases is found consistent with current second language acquisition theory and case history reports. It is suggested the "din in the head" results from stimulation of the language acquisition device set off when the acquirer receives enough comprehensible input. (Author/MSE)

This introductory paper covers basic concepts and terminology relevant to the application of research on relational learning to mental retardation. The paper discusses conditional discrimination; conditional stimulus relations and stimulus equivalence; generalized stimulus relations; impact of mediational processes on emergent behavior; relational…

Presents a proposed unifying relationship between instructional methods and cognitive operations, and argues that it is the location of the processing of the learning task that defines the function, type, and extent of the instructional method required. More than 50 references are listed. (MER)

Measuring the changes in neurotransmitter extracellular levels in discrete brain areas is considered a tool for identifying the neuronal systems involved in specific behavioral responses or cognitive processes. Acetylcholine (ACh) is the first neurotransmitter whose diffusion from the central nervous system was investigated and whose extracellular…