Reisa A. Sperlinga's scientific contributions

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Publications (1)

Fig. 1. Schematic of the face – name associative paradigm used to study confidence in recognition memory. Stimuli were presented in a mixed block/event- related design with each run consisting of 3 encoding (ENC) blocks, 3 recognition/confidence assessment blocks (REC/CONF), and alternating blocks of visual fixation. Each large tick mark represents a single presentation of a 3.5-s face – name stimulus followed by 0.5 s of fixation. Each smaller tick mark represents 1 s of visual fixation. In each encoding block, subjects viewed four novel face – name pairs (E) with intermixed fixation trials. In each recognition/confidence assessment block, subjects viewed four faces that were encoded approximately 5 min earlier in the previous run. In the recognition task (R), subjects chose the correct name among three names. Then, after a varying inter-stimulus interval, in the confidence assessment task (C), subjects indicated whether they had high or low confidence that they chose the correct name. 
Fig. 2. Regions showing differential activation during the processes of recognition and confidence assessment. Whole-brain analyses in SPM99 showed greater activation during recognition than confidence assessment for high confidence correct responses in anterior cingulate (a) and fusiform (b) regions. Extracted MR signal timecourses during recognition and confidence assessment show that these differences were driven by increases in MR signal. Several regions showed the opposite pattern with greater activation during confidence assessment than recognition, including orbitofrontal (c), lateral parietal (d), and medial parietal (e) regions. Extracted MR signal timecourses revealed that the differences in the parietal regions were typically driven by decreases during recognition (d, e) and sometimes also by small increases during confidence assessment (d). 
Fig. 3. Regions showing significant differences for high and low confidence trials during confidence assessment for both correct and incorrect responses. These regions included anterior and posterior cingulate (a), medial prefrontal (b), and the MTL (c). The extracted MR signal timecourses show that the significant differences were typically driven by small increases in signal during high confidence responses and decreases in signal during low confidence responses. 
Fig. 4. The MTL was the only region that showed significant differences for both the HC-Correct > LC-Correct and HC-Incorrect > LC-Incorrect contrasts and is shown on a coronal slice (left: À 24, À 24, À 21; right: 27, À 12, À 24). The extracted MR signal timecourses show that both LC-Correct and LC-Incorrect responses show similar decreases relative to both baseline and to HC-Correct and HC-Incorrect responses. 
Fig. 5. The MR signal timecourses in the left MTL ( À 24, À 24, À 21) and right MTL (27, À 12, À 24) during recognition, and confidence assessment for high and low confidence trials. For high confidence trials (solid lines), the MR signal is similar to baseline during recognition (blue) and confidence assessment (red). For low confidence trials (dotted lines), the MR signal showed signal decreases during recognition (blue) and confidence assessment (red). 
Rapid Communication Understanding metamemory: Neural correlates of the cognitive process and subjective level of confidence in recognition memory
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Reisa A. Sperlinga
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Citations (1)

... The lack of integration could explain the difference in fMRI activity between the hippocampal formation and retrosplenial cortex. This interpretation is also consistent with studies that have associated the retrosplenial cortex to " knowing that you know " (Chua et al. 2006; Vannini et al. 2010). More generally, these findings suggest a central role of the retrosplenial cortex within the recollection network, as integration of information likely requires communication with multiple brain regions (Rugg and Vilberg 2013). ...

Reference:

Age-Related Increases in Tip-of-the-tongue are Distinct from Decreases in Remembering Names: A Functional MRI Study
Rapid Communication Understanding metamemory: Neural correlates of the cognitive process and subjective level of confidence in recognition memory

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Reisa A. Sperlinga