Contribution of Embodiment to Solving the Riddle of Infantile Amnesia

At least since the late nineteenth century, researchers have sought an explanation for infantile amnesia (IA)—the lack of autobiographical memories dating from early childhood—and childhood amnesia (CA), faster forgetting of events up until the age of about seven. Evidence suggests that IA occurs a...

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Main Authors: Arthur M Glenberg, Justin eHayes
Format: Article
Language:English
Published: Frontiers Media S.A. 2016-01-01
Series:Frontiers in Psychology
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fpsyg.2016.00010/full
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author Arthur M Glenberg
Arthur M Glenberg
Justin eHayes
author_facet Arthur M Glenberg
Arthur M Glenberg
Justin eHayes
author_sort Arthur M Glenberg
collection DOAJ
description At least since the late nineteenth century, researchers have sought an explanation for infantile amnesia (IA)—the lack of autobiographical memories dating from early childhood—and childhood amnesia (CA), faster forgetting of events up until the age of about seven. Evidence suggests that IA occurs across altricial species, and a number of studies using animal models have converged on the hypothesis that maturation of the hippocampus is an important factor. But why does the hippocampus mature at one time and not another, and how does that maturation relate to memory? Our hypothesis is rooted in theories of embodied cognition, and it provides an explanation both for hippocampal development and the end of IA. Specifically, the onset of locomotion prompts the alignment of hippocampal place cells and grid cells to the environment, which in turn facilitates the ontogeny of long-term episodic memory and the end of IA. That is, because the animal can now reliably discriminate locations, location becomes a stable cue for memories. Furthermore, as the mode of human locomotion shifts from crawling to walking, there is an additional shift in the alignment of the hippocampus that marks the beginning of adult-like episodic memory and the end of CA. Finally, given a reduction in self-locomotion and exploration with aging, the hypothesis suggests a partial explanation for cognitive decline with aging.
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spelling doaj.art-c194e3ec68fb41199dc49f942043d7602022-12-21T18:58:05ZengFrontiers Media S.A.Frontiers in Psychology1664-10782016-01-01710.3389/fpsyg.2016.00010178928Contribution of Embodiment to Solving the Riddle of Infantile AmnesiaArthur M Glenberg0Arthur M Glenberg1Justin eHayes2Arizona State UniversityUniversity of Wisconsin-MadisonSimpson CollegeAt least since the late nineteenth century, researchers have sought an explanation for infantile amnesia (IA)—the lack of autobiographical memories dating from early childhood—and childhood amnesia (CA), faster forgetting of events up until the age of about seven. Evidence suggests that IA occurs across altricial species, and a number of studies using animal models have converged on the hypothesis that maturation of the hippocampus is an important factor. But why does the hippocampus mature at one time and not another, and how does that maturation relate to memory? Our hypothesis is rooted in theories of embodied cognition, and it provides an explanation both for hippocampal development and the end of IA. Specifically, the onset of locomotion prompts the alignment of hippocampal place cells and grid cells to the environment, which in turn facilitates the ontogeny of long-term episodic memory and the end of IA. That is, because the animal can now reliably discriminate locations, location becomes a stable cue for memories. Furthermore, as the mode of human locomotion shifts from crawling to walking, there is an additional shift in the alignment of the hippocampus that marks the beginning of adult-like episodic memory and the end of CA. Finally, given a reduction in self-locomotion and exploration with aging, the hypothesis suggests a partial explanation for cognitive decline with aging.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2016.00010/fullAgingLocomotionMemoryembodimentInfantile amnesiaChildhood amnesia
spellingShingle Arthur M Glenberg
Arthur M Glenberg
Justin eHayes
Contribution of Embodiment to Solving the Riddle of Infantile Amnesia
Frontiers in Psychology
Aging
Locomotion
Memory
embodiment
Infantile amnesia
Childhood amnesia
title Contribution of Embodiment to Solving the Riddle of Infantile Amnesia
title_full Contribution of Embodiment to Solving the Riddle of Infantile Amnesia
title_fullStr Contribution of Embodiment to Solving the Riddle of Infantile Amnesia
title_full_unstemmed Contribution of Embodiment to Solving the Riddle of Infantile Amnesia
title_short Contribution of Embodiment to Solving the Riddle of Infantile Amnesia
title_sort contribution of embodiment to solving the riddle of infantile amnesia
topic Aging
Locomotion
Memory
embodiment
Infantile amnesia
Childhood amnesia
url http://journal.frontiersin.org/Journal/10.3389/fpsyg.2016.00010/full
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