Material-specific memory in traumatic brain injury: differential effects during acquisition, recall, and retention |
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Authors: | Vanderploeg R D Curtiss G Schinka J A Lanham R A |
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Institution: | James A. Haley Veterans Affairs Medical Center, University of South Florida, and Defense and Veterans Head Injury Program, Tampa 33612, USA. rodney.vanderploeg@med.va.gov |
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Abstract: | Material-specific memory refers to the ability to learn and recall new episodic information on the basis of the nature of the stimulus material (e.g., verbal vs. nonverbal-visuospatial). Structural equation modeling was used to analyze data from a sample of patients with traumatic brain injury to compare 3 models of memory functioning: material-specific, material-specific plus general, and general (non-material-specific). The models were examined separately for acquisition, delayed free recall, and retention aspects of memory. Results suggest that, at least in a population with traumatic brain injury, the acquisition of new information takes place in a material-specific memory fashion, delayed free recall involves both material-specific and general (non-material-specific) memory components, but retention relies primarily on general (non-material-specific) memory processes. |
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