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The Posterior Parietal Cortex and Subjectively Perceived Confidence during Memory Retrieval

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Title: The Posterior Parietal Cortex and Subjectively Perceived Confidence during Memory Retrieval
Language: English
Authors: Wynn, Syanah C., Hendriks, Marc P. H., Daselaar, Sander M., Kessels, Roy P. C., Schutter, Dennis J. L. G.
Source: Learning & Memory. Aug 2018 25(8):382-389.
Availability: Cold Spring Harbor Laboratory Press. 500 Sunnyside Boulevard, Woodbury, NY 11797-2924. Tel: 800-843-4388; Tel: 516-367-8800; Fax: 516-422-4097; e-mail: cshpres@cshl.edu; Web site: http://learnmem.cshlp.org
Peer Reviewed: Y
Page Count: 8
Publication Date: 2018
Document Type: Journal Articles
Reports - Research
Descriptors: Memory, Brain, Stimulation, Brain Hemisphere Functions, Foreign Countries, Volunteers, Individual Differences, Handedness, Adults, Familiarity, Recall (Psychology)
Geographic Terms: Netherlands
DOI: 10.1101/lm.048033.118
ISSN: 1072-0502
Abstract: Functional neuroimaging studies suggest a role for the left angular gyrus (AG) in processes related to memory recognition. However, results of neuropsychological and transcranial magnetic stimulation (TMS) studies have been inconclusive regarding the specific contribution of the AG in recollection, familiarity, and the subjective experience of memory. To obtain further insight into this issue, 20 healthy right-handed volunteers performed a memory task in a single-blind within-subject controlled TMS study. Neuronavigated inhibitory repetitive TMS (rTMS) was applied over the left AG and the vertex in a randomized and counterbalanced order. Prior to rTMS participants were presented with a list of words. After rTMS participants were shown a second list of words and instructed to indicate if the word was already shown prior to rTMS ("old") or was presented for the first time ("new"). In addition, subjectively perceived memory confidence was assessed. Results showed that recollection was unaffected following inhibitory left AG rTMS. In contrast, rTMS over the left AG improved both familiarity and the subjectively perceived confidence of participants that demonstrated low baseline memory recognition. Our study highlights the importance of taking into account individual differences in experimental designs involving noninvasive brain stimulation.
Abstractor: As Provided
Number of References: 77
Entry Date: 2018
Accession Number: EJ1185647
Database: ERIC
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  Data: The Posterior Parietal Cortex and Subjectively Perceived Confidence during Memory Retrieval
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  Data: <searchLink fieldCode="AR" term="%22Wynn%2C+Syanah+C%2E%22">Wynn, Syanah C.</searchLink><br /><searchLink fieldCode="AR" term="%22Hendriks%2C+Marc+P%2E+H%2E%22">Hendriks, Marc P. H.</searchLink><br /><searchLink fieldCode="AR" term="%22Daselaar%2C+Sander+M%2E%22">Daselaar, Sander M.</searchLink><br /><searchLink fieldCode="AR" term="%22Kessels%2C+Roy+P%2E+C%2E%22">Kessels, Roy P. C.</searchLink><br /><searchLink fieldCode="AR" term="%22Schutter%2C+Dennis+J%2E+L%2E+G%2E%22">Schutter, Dennis J. L. G.</searchLink>
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  Data: <searchLink fieldCode="SO" term="%22Learning+%26+Memory%22"><i>Learning & Memory</i></searchLink>. Aug 2018 25(8):382-389.
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  Data: Cold Spring Harbor Laboratory Press. 500 Sunnyside Boulevard, Woodbury, NY 11797-2924. Tel: 800-843-4388; Tel: 516-367-8800; Fax: 516-422-4097; e-mail: cshpres@cshl.edu; Web site: http://learnmem.cshlp.org
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  Data: 8
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  Data: 10.1101/lm.048033.118
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  Data: 1072-0502
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Functional neuroimaging studies suggest a role for the left angular gyrus (AG) in processes related to memory recognition. However, results of neuropsychological and transcranial magnetic stimulation (TMS) studies have been inconclusive regarding the specific contribution of the AG in recollection, familiarity, and the subjective experience of memory. To obtain further insight into this issue, 20 healthy right-handed volunteers performed a memory task in a single-blind within-subject controlled TMS study. Neuronavigated inhibitory repetitive TMS (rTMS) was applied over the left AG and the vertex in a randomized and counterbalanced order. Prior to rTMS participants were presented with a list of words. After rTMS participants were shown a second list of words and instructed to indicate if the word was already shown prior to rTMS ("old") or was presented for the first time ("new"). In addition, subjectively perceived memory confidence was assessed. Results showed that recollection was unaffected following inhibitory left AG rTMS. In contrast, rTMS over the left AG improved both familiarity and the subjectively perceived confidence of participants that demonstrated low baseline memory recognition. Our study highlights the importance of taking into account individual differences in experimental designs involving noninvasive brain stimulation.
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