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…

Previous studies have indicated that nonhuman animals might have a capacity for episodic-like recall reflected in memory for "what" events that happened "where" and "when". These studies did not identify the brain structures that are critical to this capacity. Here we trained rats to remember single training episodes, each composed of a series of…

The goal of this work is to extend the theoretical understanding of the relationship between hippocampal spatial and memory functions to the level of neurophysiological mechanisms underlying spatial navigation and episodic memory retrieval. The proposed unifying theory describes both phenomena within a unique framework, as based on one and the…

This study investigates children's ability to use language to guide their choice of individuation criterion in the domains of objects and events. Previous work (Shipley, E. F., & Shepperson, B. (1990). Countable entities: developmental changes. "Cognition," 34, 109-136.) has shown that children have a strong bias to use a spatio-temporal…

This study used cortical source analysis to locate potential cortical sources of event-related potentials (ERPs) during covert orienting in infants aged 14 and 20 weeks. The infants were tested in a spatial cueing procedure. The reaction time to localize the target showed response facilitation for valid trials relative to invalid or neutral…

Human toddlers demonstrate striking failures when searching for hidden objects that interact with other objects, yet successfully locate hidden objects that do not undergo mechanical interactions. This pattern hints at a developmental dissociation between contact-mechanical and spatiotemporal knowledge. Recent studies suggest that adult non-human…

We report the results of an experiment investigating the ramifications of using space to express coreference in American Sign Language (ASL). Nominals in ASL can be associated with locations in signing space, and pronouns are directed toward those locations to convey coreference. A probe recognition technique was used to investigate the case of…

Many educational theorists in recent decades have argued for the plurality of forms of knowledge, both in the mind and in the curriculum. Two popular ways of conceptualizing this plurality have claimed that individual students either differ in their "learning styles" or possess "multiple intelligences". Both theories have encountered numerous…

The well-documented evidence that bilinguals demonstrate cognitive advantages over monolinguals is used as a foundation for the hypothesis that bilinguals will be better able to solve certain spatial tasks, and a theoretical framework for this hypothesis is constructed. The paper describes an experiment to explore this hypothesis. A series of…

Informal journal writing in freshman level World Regional Geography classes is discussed as an active learning method that helps students to develop their spatial perspective and gain a better understanding of the interconnected nature of geographic phenomena. In particular, students read about events in the world and write their ideas about the…

To study the developmental interrelationships among various aspects of logico-mathematical knowledge, 80 one- to 4-year-olds were individually asked to build "something tall" with 20 blocks. Percentages of new and significant behaviors increased with age and were analyzed in terms of the development of logico-mathematical relationships. It was…

The use of geographic information systems (GIS) in the classroom provides a robust and effective method of teaching the primary spatial skills of identification, description, and explanation of spatial pattern. A major handicap for the development of GIS-based learning experiences, especially for non-GIS specialist educators, is the availability…

In this study 141 British parents estimated their own, and one of their children's IQ on their overall intelligence as well as on Gardner's (1983) [Gardner, H. (1983). "Frames of the mind: The theory of multiple intelligences." New York: Basic Books.] seven multiple ''intelligences''. Replicating previous studies, fathers gave higher…

Nanotechnology is an emergent technology that holds much promise and excitement. The ability to control and manipulate matter at the most basic level--atoms and molecules--offers possibilities that transcend traditional science discipline boundaries. This interdisciplinary nature of nanotechnology provides many avenues for teachers to connect the…

Although deficits in visual attention are often postulated as an important component of many declines in cognitive processing and functional outcomes in older adults, surprisingly little emphasis has been placed on evaluating psychometric instruments with which individual differences in visual attention ability can be assessed. This article…