Dynamic Neural Fields
The Dynamic Field Theory of spatial memory is a dynamic systems model of spatial memory that uses dynamic neural fields. Dynamic neural fields are based on the population dynamics of neurons in cortex. The activation of neurons in the field evolves over time. Changes in activation patterns depend on interaction between neurons in the field as well as inputs to the field.A memory for a location is modeled as a peak of activation in a field. Due to neuronal interaction, the peak self-sustains. What happens to the peak during the memory delay and how that varies over development is the focus of most of our work.
Impact of the Environment on Cognition
Aspects of the physical environment can influence cognition, especially executive functions such as attention and working memory. Specifically, spending time in natural environments can improve executive function for children and adults. For example, previous research indicates that for children diagnosed with Attention Deficit Hyperactivity Disorder, a 20 minute walk in a park enhanced attention in subsequent tasks (Taylor & Kuo, 2009). Taylor & Kuo (2009) also reported that a walk in the park was significantly more beneficial than a walk in an urban area or a walk in a residential area. Our research examines in more detail whether time in natural areas has unique restorative properties for attention and other cognitive abilities and what aspects of the environment are important for improving cognition.
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