File Name: double dissociations in visual and spatial short term memory .zip
The aim of the present study was to compare visuospatial working memory performance in 18 individuals with Williams syndrome WS and 18 typically developing TD children matched for nonverbal mental age. Two aspects were considered: task presentation format i. Our results showed that individuals with WS performed less well than TD children in passive spatial-simultaneous tasks, but not in passive spatial-sequential tasks. The former's performance was also worse in both active tasks.
Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Klauer and Z. Klauer , Z. Zhao Published Psychology, Medicine Journal of experimental psychology. A visual short-term memory task was more strongly disrupted by visual than spatial interference, and a spatial memory task was simultaneously more strongly disrupted by spatial than visual interference.
The Brooks verbal and visuo-spatial matrix tasks were performed alone, with articulatory suppression, or with a spatial suppression task; the results produced the expected dissociation. We used approximate Bayesian computation techniques to fit the feature model to the data and showed that the similarity-based interference process implemented in the model accounted for the data patterns well. Again, the model performed well. The findings show that a double dissociation can be modelled without appealing to separate systems for verbal and visuo-spatial processing. The latter findings are significant as the feature model had not been used to model this type of dissociation before; importantly, this is also the first time the model is quantitatively fit to data. For the demonstration provided here, modularity was unnecessary if two assumptions were made: 1 the main difference between spatial and verbal working-memory tasks is the features that are encoded; 2 secondary tasks selectively interfere with primary tasks to the extent that both tasks involve similar features.
In cognitive psychology and neuroscience , spatial memory is a form of memory responsible for the recording of information about one's environment and spatial orientation. For example, a person's spatial memory is required in order to navigate around a familiar city, just as a rat's spatial memory is needed to learn the location of food at the end of a maze. It is often argued that in both humans and animals, spatial memories are summarized as a cognitive map. Spatial memory has representations within working, short-term memory and long-term memory. Research indicates that there are specific areas of the brain associated with spatial memory. Many methods are used for measuring spatial memory in children, adults, and animals. Short-term memory STM can be described as a system allowing one to temporarily store and manage information that is necessary to complete complex cognitive tasks.
Baddeley's model of working memory is a model of human memory proposed by Alan Baddeley and Graham Hitch in , in an attempt to present a more accurate model of primary memory often referred to as short-term memory. Working memory splits primary memory into multiple components, rather than considering it to be a single, unified construct. This model is later expanded upon by Baddeley and other co-workers to add a fourth component, and has become the dominant view in the field of working memory. However, alternative models are developing, providing a different perspective on the working memory system. The phonological loop stores verbal content, whereas the visuo-spatial sketchpad caters to visuo-spatial data.
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