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Episodic Memory Precision and Reality Monitoring Following Stimulation of Angular Gyrus.

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Title: Episodic Memory Precision and Reality Monitoring Following Stimulation of Angular Gyrus.
Authors: Kwon, Simon (AUTHOR), Richter, Franziska R. (AUTHOR), Siena, Michael J. (AUTHOR), Simons, Jon S. (AUTHOR)
Source: Journal of Cognitive Neuroscience. Apr2022, Vol. 34 Issue 4, p687-698. 12p. 2 Charts, 3 Graphs.
Subjects: Parietal lobe, Brain stimulation, Episodic memory, Consciousness, Recollection (Psychology)
Abstract: The qualities of remembered experiences are often used to inform "reality monitoring" judgments, our ability to distinguish real and imagined events. Previous experiments have tended to investigate only whether reality monitoring decisions are accurate or not, providing little insight into the extent to which reality monitoring may be affected by qualities of the underlying mnemonic representations. We used a continuous-response memory precision task to measure the quality of remembered experiences that underlie two different types of reality monitoring decisions: self/experimenter decisions that distinguish actions performed by participants and the experimenter and imagined/perceived decisions that distinguish imagined and perceived experiences. The data revealed memory precision to be associated with higher accuracy in both self/experimenter and imagined/perceived reality monitoring decisions, with lower precision linked with a tendency to misattribute self-generated experiences to external sources. We then sought to investigate the possible neurocognitive basis of these observed associations by applying brain stimulation to a region that has been implicated in precise recollection of personal events, the left angular gyrus. Stimulation of angular gyrus selectively reduced the association between memory precision and self-referential reality monitoring decisions, relative to control site stimulation. The angular gyrus may, therefore, be important for the mnemonic processes involved in representing remembered experiences that give rise to a sense of self-agency, a key component of "autonoetic consciousness" that characterizes episodic memory. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Group: Ti
  Data: Episodic Memory Precision and Reality Monitoring Following Stimulation of Angular Gyrus.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Kwon%2C+Simon%22">Kwon, Simon</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Richter%2C+Franziska+R%2E%22">Richter, Franziska R.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Siena%2C+Michael+J%2E%22">Siena, Michael J.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Simons%2C+Jon+S%2E%22">Simons, Jon S.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Cognitive+Neuroscience%22">Journal of Cognitive Neuroscience</searchLink>. Apr2022, Vol. 34 Issue 4, p687-698. 12p. 2 Charts, 3 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Parietal+lobe%22">Parietal lobe</searchLink><br /><searchLink fieldCode="DE" term="%22Brain+stimulation%22">Brain stimulation</searchLink><br /><searchLink fieldCode="DE" term="%22Episodic+memory%22">Episodic memory</searchLink><br /><searchLink fieldCode="DE" term="%22Consciousness%22">Consciousness</searchLink><br /><searchLink fieldCode="DE" term="%22Recollection+%28Psychology%29%22">Recollection (Psychology)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The qualities of remembered experiences are often used to inform "reality monitoring" judgments, our ability to distinguish real and imagined events. Previous experiments have tended to investigate only whether reality monitoring decisions are accurate or not, providing little insight into the extent to which reality monitoring may be affected by qualities of the underlying mnemonic representations. We used a continuous-response memory precision task to measure the quality of remembered experiences that underlie two different types of reality monitoring decisions: self/experimenter decisions that distinguish actions performed by participants and the experimenter and imagined/perceived decisions that distinguish imagined and perceived experiences. The data revealed memory precision to be associated with higher accuracy in both self/experimenter and imagined/perceived reality monitoring decisions, with lower precision linked with a tendency to misattribute self-generated experiences to external sources. We then sought to investigate the possible neurocognitive basis of these observed associations by applying brain stimulation to a region that has been implicated in precise recollection of personal events, the left angular gyrus. Stimulation of angular gyrus selectively reduced the association between memory precision and self-referential reality monitoring decisions, relative to control site stimulation. The angular gyrus may, therefore, be important for the mnemonic processes involved in representing remembered experiences that give rise to a sense of self-agency, a key component of "autonoetic consciousness" that characterizes episodic memory. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=155582500
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        Value: 10.1162/jocn_a_01814
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        Text: English
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        Type: general
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      – SubjectFull: Episodic memory
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      – SubjectFull: Consciousness
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              Text: Apr2022
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              Y: 2022
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