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Competition and Cooperation among Relational Memory Representations.

Schwarb H, Watson PD, Campbell K, Shander CL, Monti JM, Cooke GE, Wang JX, Kramer AF, Cohen NJ - PLoS ONE (2015)

Bottom Line: In this task, participants learned unique face-room associations in two distinct contexts (i.e., different colored buildings).Overall, performance was very accurate.This novel task provides a powerful tool for investigating both the unique and interacting contributions of these systems in support of relational memory.

View Article: PubMed Central - PubMed

Affiliation: University of Illinois, Beckman Institute for Advanced Science and Technology, Urbana, IL, United States of America.

ABSTRACT
Mnemonic processing engages multiple systems that cooperate and compete to support task performance. Exploring these systems' interaction requires memory tasks that produce rich data with multiple patterns of performance sensitive to different processing sub-components. Here we present a novel context-dependent relational memory paradigm designed to engage multiple learning and memory systems. In this task, participants learned unique face-room associations in two distinct contexts (i.e., different colored buildings). Faces occupied rooms as determined by an implicit gender-by-side rule structure (e.g., male faces on the left and female faces on the right) and all faces were seen in both contexts. In two experiments, we use behavioral and eye-tracking measures to investigate interactions among different memory representations in both younger and older adult populations; furthermore we link these representations to volumetric variations in hippocampus and ventromedial PFC among older adults. Overall, performance was very accurate. Successful face placement into a studied room systematically varied with hippocampal volume. Selecting the studied room in the wrong context was the most typical error. The proportion of these errors to correct responses positively correlated with ventromedial prefrontal volume. This novel task provides a powerful tool for investigating both the unique and interacting contributions of these systems in support of relational memory.

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Related in: MedlinePlus

Eye-movement data.Proportion of viewing to rooms on the correct (green) and incorrect (blue) side of the building. Dark bars indicate face placements to the studied room on a given side whereas colored (green or blue) bars indicate face placements to any of the remaining eight unstudied rooms. Data are presented for both the Young Adult (a) and Older Adult (b) groups for both the gray building and color building viewing period; standard error bars are shown.
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pone.0143832.g007: Eye-movement data.Proportion of viewing to rooms on the correct (green) and incorrect (blue) side of the building. Dark bars indicate face placements to the studied room on a given side whereas colored (green or blue) bars indicate face placements to any of the remaining eight unstudied rooms. Data are presented for both the Young Adult (a) and Older Adult (b) groups for both the gray building and color building viewing period; standard error bars are shown.

Mentions: Young adults viewed the CC side of the building 48.3% and the CI side 51.7% of the time (Fig 7a); older adults viewed the CC side 52.3% and the CI side 47.7% of the time (Fig 7b). A Side (CC, CI) x Group (Young, Old) repeated measures ANOVA was performed and neither the main effect of side, F(1,38) = .03, p = .861, η2 = .001, nor the interaction, F(1,38) = 1.31, p = .261, η2 = .033, were significant. Thus participants directed a similar proportion of viewing to the CC and CI sides and this relationship was similar between the groups.


Competition and Cooperation among Relational Memory Representations.

Schwarb H, Watson PD, Campbell K, Shander CL, Monti JM, Cooke GE, Wang JX, Kramer AF, Cohen NJ - PLoS ONE (2015)

Eye-movement data.Proportion of viewing to rooms on the correct (green) and incorrect (blue) side of the building. Dark bars indicate face placements to the studied room on a given side whereas colored (green or blue) bars indicate face placements to any of the remaining eight unstudied rooms. Data are presented for both the Young Adult (a) and Older Adult (b) groups for both the gray building and color building viewing period; standard error bars are shown.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664414&req=5

pone.0143832.g007: Eye-movement data.Proportion of viewing to rooms on the correct (green) and incorrect (blue) side of the building. Dark bars indicate face placements to the studied room on a given side whereas colored (green or blue) bars indicate face placements to any of the remaining eight unstudied rooms. Data are presented for both the Young Adult (a) and Older Adult (b) groups for both the gray building and color building viewing period; standard error bars are shown.
Mentions: Young adults viewed the CC side of the building 48.3% and the CI side 51.7% of the time (Fig 7a); older adults viewed the CC side 52.3% and the CI side 47.7% of the time (Fig 7b). A Side (CC, CI) x Group (Young, Old) repeated measures ANOVA was performed and neither the main effect of side, F(1,38) = .03, p = .861, η2 = .001, nor the interaction, F(1,38) = 1.31, p = .261, η2 = .033, were significant. Thus participants directed a similar proportion of viewing to the CC and CI sides and this relationship was similar between the groups.

Bottom Line: In this task, participants learned unique face-room associations in two distinct contexts (i.e., different colored buildings).Overall, performance was very accurate.This novel task provides a powerful tool for investigating both the unique and interacting contributions of these systems in support of relational memory.

View Article: PubMed Central - PubMed

Affiliation: University of Illinois, Beckman Institute for Advanced Science and Technology, Urbana, IL, United States of America.

ABSTRACT
Mnemonic processing engages multiple systems that cooperate and compete to support task performance. Exploring these systems' interaction requires memory tasks that produce rich data with multiple patterns of performance sensitive to different processing sub-components. Here we present a novel context-dependent relational memory paradigm designed to engage multiple learning and memory systems. In this task, participants learned unique face-room associations in two distinct contexts (i.e., different colored buildings). Faces occupied rooms as determined by an implicit gender-by-side rule structure (e.g., male faces on the left and female faces on the right) and all faces were seen in both contexts. In two experiments, we use behavioral and eye-tracking measures to investigate interactions among different memory representations in both younger and older adult populations; furthermore we link these representations to volumetric variations in hippocampus and ventromedial PFC among older adults. Overall, performance was very accurate. Successful face placement into a studied room systematically varied with hippocampal volume. Selecting the studied room in the wrong context was the most typical error. The proportion of these errors to correct responses positively correlated with ventromedial prefrontal volume. This novel task provides a powerful tool for investigating both the unique and interacting contributions of these systems in support of relational memory.

Show MeSH
Related in: MedlinePlus