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Listening for recollection: a multi-voxel pattern analysis of recognition memory retrieval strategies.

Quamme JR, Weiss DJ, Norman KA - Front Hum Neurosci (2010)

Bottom Line: We looked for brain regions that met the following criteria: (1) Distinct neural patterns should be present when subjects are instructed to rely on recollection vs. familiarity, and (2) fluctuations in these neural patterns should be related to recognition behavior in the manner predicted by dual-process theories of recognition: Specifically, the presence of the recollection pattern during the pre-stimulus interval (indicating that subjects are "listening for recollection" at that moment) should be associated with a selective decrease in false alarms to related lures.We found that pre-stimulus activity in the right supramarginal gyrus met all of these criteria, suggesting that this region proactively establishes an internally directed attentional state that fosters recollection.We also found other regions (e.g., left middle temporal gyrus) where the pattern of neural activity was related to subjects' responding to related lures after stimulus onset (but not before), suggesting that these regions implement processes that are engaged in a reactive fashion to boost recollection.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, Grand Valley State University Allendale, MI, USA.

ABSTRACT
Recent studies of recognition memory indicate that subjects can strategically vary how much they rely on recollection of specific details vs. feelings of familiarity when making recognition judgments. One possible explanation of these results is that subjects can establish an internally directed attentional state ("listening for recollection") that enhances retrieval of studied details; fluctuations in this attentional state over time should be associated with fluctuations in subjects' recognition behavior. In this study, we used multi-voxel pattern analysis of fMRI data to identify brain regions that are involved in listening for recollection. We looked for brain regions that met the following criteria: (1) Distinct neural patterns should be present when subjects are instructed to rely on recollection vs. familiarity, and (2) fluctuations in these neural patterns should be related to recognition behavior in the manner predicted by dual-process theories of recognition: Specifically, the presence of the recollection pattern during the pre-stimulus interval (indicating that subjects are "listening for recollection" at that moment) should be associated with a selective decrease in false alarms to related lures. We found that pre-stimulus activity in the right supramarginal gyrus met all of these criteria, suggesting that this region proactively establishes an internally directed attentional state that fosters recollection. We also found other regions (e.g., left middle temporal gyrus) where the pattern of neural activity was related to subjects' responding to related lures after stimulus onset (but not before), suggesting that these regions implement processes that are engaged in a reactive fashion to boost recollection.

No MeSH data available.


Related in: MedlinePlus

Classifier output as a function of recognition behavior in the left posterior parahippocampal region for four time windows around the trial onset, for the MVPA and AVG analyses, See the caption of Figure 6 for explanation of the plots.
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Figure 8: Classifier output as a function of recognition behavior in the left posterior parahippocampal region for four time windows around the trial onset, for the MVPA and AVG analyses, See the caption of Figure 6 for explanation of the plots.

Mentions: Multi-voxel pattern analysis revealed a different significant region for Window 2 in the medial parietal–occipital junction, centered on the left cuneus/BA 18 and extending into the precuneus and posterior cingulate/BA 31 (see Figure 7). There were also two regions that were identified as significant by the AVG procedure but not MVPA. The AVG analysis revealed a significant cluster of spheres in left posterior medial temporal lobe centered on the left parahippocampal gyrus, and covering the left posterior hippocampus and caudate (see Figure 8). The AVG analysis also identified a significant cluster of spheres in left lingual gyrus/BA 19 (see Figure 9); the MVPA analysis showed a similar trend in this region, but the effect did not reach significance.


Listening for recollection: a multi-voxel pattern analysis of recognition memory retrieval strategies.

Quamme JR, Weiss DJ, Norman KA - Front Hum Neurosci (2010)

Classifier output as a function of recognition behavior in the left posterior parahippocampal region for four time windows around the trial onset, for the MVPA and AVG analyses, See the caption of Figure 6 for explanation of the plots.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2927239&req=5

Figure 8: Classifier output as a function of recognition behavior in the left posterior parahippocampal region for four time windows around the trial onset, for the MVPA and AVG analyses, See the caption of Figure 6 for explanation of the plots.
Mentions: Multi-voxel pattern analysis revealed a different significant region for Window 2 in the medial parietal–occipital junction, centered on the left cuneus/BA 18 and extending into the precuneus and posterior cingulate/BA 31 (see Figure 7). There were also two regions that were identified as significant by the AVG procedure but not MVPA. The AVG analysis revealed a significant cluster of spheres in left posterior medial temporal lobe centered on the left parahippocampal gyrus, and covering the left posterior hippocampus and caudate (see Figure 8). The AVG analysis also identified a significant cluster of spheres in left lingual gyrus/BA 19 (see Figure 9); the MVPA analysis showed a similar trend in this region, but the effect did not reach significance.

Bottom Line: We looked for brain regions that met the following criteria: (1) Distinct neural patterns should be present when subjects are instructed to rely on recollection vs. familiarity, and (2) fluctuations in these neural patterns should be related to recognition behavior in the manner predicted by dual-process theories of recognition: Specifically, the presence of the recollection pattern during the pre-stimulus interval (indicating that subjects are "listening for recollection" at that moment) should be associated with a selective decrease in false alarms to related lures.We found that pre-stimulus activity in the right supramarginal gyrus met all of these criteria, suggesting that this region proactively establishes an internally directed attentional state that fosters recollection.We also found other regions (e.g., left middle temporal gyrus) where the pattern of neural activity was related to subjects' responding to related lures after stimulus onset (but not before), suggesting that these regions implement processes that are engaged in a reactive fashion to boost recollection.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, Grand Valley State University Allendale, MI, USA.

ABSTRACT
Recent studies of recognition memory indicate that subjects can strategically vary how much they rely on recollection of specific details vs. feelings of familiarity when making recognition judgments. One possible explanation of these results is that subjects can establish an internally directed attentional state ("listening for recollection") that enhances retrieval of studied details; fluctuations in this attentional state over time should be associated with fluctuations in subjects' recognition behavior. In this study, we used multi-voxel pattern analysis of fMRI data to identify brain regions that are involved in listening for recollection. We looked for brain regions that met the following criteria: (1) Distinct neural patterns should be present when subjects are instructed to rely on recollection vs. familiarity, and (2) fluctuations in these neural patterns should be related to recognition behavior in the manner predicted by dual-process theories of recognition: Specifically, the presence of the recollection pattern during the pre-stimulus interval (indicating that subjects are "listening for recollection" at that moment) should be associated with a selective decrease in false alarms to related lures. We found that pre-stimulus activity in the right supramarginal gyrus met all of these criteria, suggesting that this region proactively establishes an internally directed attentional state that fosters recollection. We also found other regions (e.g., left middle temporal gyrus) where the pattern of neural activity was related to subjects' responding to related lures after stimulus onset (but not before), suggesting that these regions implement processes that are engaged in a reactive fashion to boost recollection.

No MeSH data available.


Related in: MedlinePlus