Episodic Memory Precision and Reality Monitoring Following Stimulation of Angular Gyrus

Kwon, Simon; Richter, Franziska R.; Siena, M. J.; Simons, Jon S.

doi:10.1162/jocn_a_01814

Cited by 12 publications

(7 citation statements)

References 46 publications

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“…TMS over the left AG showed a critical involvement of the left AG in left-right discrimination (Hirnstein et al, 2011). Stimulation of the AG selectively reduced the association between memory precision and self-referential reality monitoring decisions, suggesting a causal role in filling remembered experiences with a sense of self-agency (Kwon et al, 2022). In this domain, many studies showed a particular role of the inferior parietal lobule, including the AG, in the definition of the boundaries of our bodies and in the integration and comparison of sensorimotor information flows to correctly attribute movements agency (for review see (Crivelli and Balconi, 2017)).…”

Section: Agency and Self-processingmentioning

confidence: 90%

Multiple functions of the angular gyrus at high temporal resolution

Seghier

2022

Brain Struct Funct

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Here, the functions of the angular gyrus (AG) are evaluated in the light of current evidence from transcranial magnetic/electric stimulation (TMS/TES) and EEG/MEG studies. 65 TMS/TES and 52 EEG/MEG studies were examined in this review. TMS/TES literature points to a causal role in semantic processing, word and number processing, attention and visual search, self-guided movement, memory, and self-processing.EEG/MEG studies reported AG effects at latencies varying between 32 ms and 800 ms in a wide range of domains, with a high probability to detect an effect at 300-350 ms poststimulus onset. A three-phase unifying model revolving around the process of sensemaking is then suggested: (1) early AG involvement in defining the current context, within the first 200 ms, with a bias toward the right hemisphere; (2) attention reorientation and retrieval of relevant information within 200-500 ms; and (3) cross-modal integration at late latencies with a bias toward the left hemisphere. This sensemaking process can favour accuracy (e.g. for word and number processing) or plausibility (e.g. for comprehension and social cognition). Such functions of the AG depend on the status of other connected regions. The much-debated semantic role is also discussed: (1) there is a strong TMS/TES evidence for a causal semantic role, (2) current EEG/MEG evidence is however weak, but (3) the existing arguments against a semantic role for the AG are not strong. Some outstanding questions for future research are proposed. This review recognizes that cracking the role(s) of the AG in cognition is possible only when its exact contributions within the default mode network are teased apart.

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Section: Agency and Self-processingmentioning

confidence: 90%

Multiple functions of the angular gyrus at high temporal resolution

Seghier

2022

Brain Struct Funct

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“…tending to take real events to have been imagined), whereas older children and adults tend to externalize episodic simulations (i.e. falsely take their imaginations to represent past experiences; Kwon et al, 2021).…”

Section: Developmentmentioning

confidence: 99%

“…Such developmental differences in reality-monitoring performance were partly explained by the fact that younger children were unable to appropriately interpret the phenomenal qualities of their episodic representations. In fact, younger children showed an internalization bias (i.e., tending to take real events to have been imagined), whereas older children and adults tend to externalize episodic simulations (i.e., falsely take their imaginations to represent past experiences; Kwon et al, 2022).…”

Section: Evidence Of Cultural Learningmentioning

confidence: 99%

Mnemicity: A Cognitive Gadget?

Mahr

Bergen

Sutton

et al. 2023

Perspect Psychol Sci

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Episodic representations can be entertained either as “remembered” or “imagined”—as outcomes of experience or as simulations of such experience. Here, we argue that this feature is the product of a dedicated cognitive function: the metacognitive capacity to determine the mnemicity of mental event simulations. We argue that mnemicity attribution should be distinguished from other metacognitive operations (such as reality monitoring) and propose that this attribution is a “cognitive gadget”—a distinctively human ability made possible by cultural learning. Cultural learning is a type of social learning in which traits are inherited through social interaction. In the case of mnemicity, one culturally learns to discriminate metacognitive “feelings of remembering” from other perceptual, emotional, action-related, and metacognitive feelings; to interpret feelings of remembering as indicators of memory rather than imagination; and to broadcast the interpreted feelings in culture- and context-specific ways, such as “I was there” or “I witnessed it myself.” We review evidence from the literature on memory development and scaffolding, metacognitive learning and teaching, as well as cross-cultural psychology in support of this view before pointing out various open questions about the nature and development of mnemicity highlighted by our account.

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“…Accordingly, the angular gyrus has been implicated in a myriad of cognitive functions, including mental arithmetic, visuospatial processing, inhibitory control, and theory-of-mind (Cattaneo et al, 2009 ;Grabner et al, 2009 ;Lewis et al, 2019 ;Schurz et al, 2014 ). Moreover, there is accumulating evidence pointing to a key role of the angular gyrus in long-term memory (Bellana et al, 2017 ;Bonnici et al, 2018 ;Kwon et al, 2022 ;Wang et al, 2014 ) and imagination (Ramanan et al, 2018 ;Thakral et al, 2017Thakral et al, , 2020. How these putative functions of the angular gyrus relate to one another, however, remained unclear.…”

Section: Introductionmentioning

confidence: 99%

Causal role of the angular gyrus in insight-driven memory reconfiguration

Grob,

Heinbockel,

Milivojevic

et al. 2024

Preprint

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Maintaining an accurate model of the world relies on our ability to update memory representations in light of new information. Previous research on the integration of new information into memory mainly focused on the hippocampus. Here, we hypothesized that the angular gyrus, known to be involved in episodic memory and imagination, plays a pivotal role in the insight-driven reconfiguration of memory representations. To test this hypothesis, participants received continuous theta burst stimulation (cTBS) over the left angular gyrus or sham stimulation before gaining insight into the relationship between previously separate life-like animated events in a narrative-insight task. During this task, participants also underwent EEG recording and their memory for linked and non-linked events was assessed shortly thereafter. Our results show that cTBS to the angular gyrus decreased memory for the linking events and reduced the memory advantage for linked relative to non-linked events. At the neural level, cTBS targeting the angular gyrus reduced centro-temporal coupling with frontal regions and abolished insight-induced neural representational changes for events linked via imagination, indicating impaired memory reconfiguration. Further, the cTBS group showed representational changes for non-linked events that resembled the patterns observed in the sham group for the linked events, suggesting failed pruning of the narrative in memory. Together, our findings demonstrate a causal role of the left angular gyrus in insight-related memory reconfigurations.

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Episodic Memory Precision and Reality Monitoring Following Stimulation of Angular Gyrus

Cited by 12 publications

References 46 publications

Multiple functions of the angular gyrus at high temporal resolution

Multiple functions of the angular gyrus at high temporal resolution

Mnemicity: A Cognitive Gadget?

Causal role of the angular gyrus in insight-driven memory reconfiguration

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