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Professional or Amateur? The Phonological Output Buffer as a Working Memory Operator
The Phonological Output Buffer (POB) is thought to be the stage in language production where phonemes are held in working memory and assembled into words. The neural implementation of the POB remains unclear despite a wealth of phenomenological data. Individuals with POB impairment make phonological...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7517200/ https://www.ncbi.nlm.nih.gov/pubmed/33286434 http://dx.doi.org/10.3390/e22060662 |
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author | Haluts, Neta Trippa, Massimiliano Friedmann, Naama Treves, Alessandro |
author_facet | Haluts, Neta Trippa, Massimiliano Friedmann, Naama Treves, Alessandro |
author_sort | Haluts, Neta |
collection | PubMed |
description | The Phonological Output Buffer (POB) is thought to be the stage in language production where phonemes are held in working memory and assembled into words. The neural implementation of the POB remains unclear despite a wealth of phenomenological data. Individuals with POB impairment make phonological errors when they produce words and non-words, including phoneme omissions, insertions, transpositions, substitutions and perseverations. Errors can apply to different kinds and sizes of units, such as phonemes, number words, morphological affixes, and function words, and evidence from POB impairments suggests that units tend to substituted with units of the same kind—e.g., numbers with numbers and whole morphological affixes with other affixes. This suggests that different units are processed and stored in the POB in the same stage, but perhaps separately in different mini-stores. Further, similar impairments can affect the buffer used to produce Sign Language, which raises the question of whether it is instantiated in a distinct device with the same design. However, what appear as separate buffers may be distinct regions in the activity space of a single extended POB network, connected with a lexicon network. The self-consistency of this idea can be assessed by studying an autoassociative Potts network, as a model of memory storage distributed over several cortical areas, and testing whether the network can represent both units of word and signs, reflecting the types and patterns of errors made by individuals with POB impairment. |
format | Online Article Text |
id | pubmed-7517200 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75172002020-11-09 Professional or Amateur? The Phonological Output Buffer as a Working Memory Operator Haluts, Neta Trippa, Massimiliano Friedmann, Naama Treves, Alessandro Entropy (Basel) Article The Phonological Output Buffer (POB) is thought to be the stage in language production where phonemes are held in working memory and assembled into words. The neural implementation of the POB remains unclear despite a wealth of phenomenological data. Individuals with POB impairment make phonological errors when they produce words and non-words, including phoneme omissions, insertions, transpositions, substitutions and perseverations. Errors can apply to different kinds and sizes of units, such as phonemes, number words, morphological affixes, and function words, and evidence from POB impairments suggests that units tend to substituted with units of the same kind—e.g., numbers with numbers and whole morphological affixes with other affixes. This suggests that different units are processed and stored in the POB in the same stage, but perhaps separately in different mini-stores. Further, similar impairments can affect the buffer used to produce Sign Language, which raises the question of whether it is instantiated in a distinct device with the same design. However, what appear as separate buffers may be distinct regions in the activity space of a single extended POB network, connected with a lexicon network. The self-consistency of this idea can be assessed by studying an autoassociative Potts network, as a model of memory storage distributed over several cortical areas, and testing whether the network can represent both units of word and signs, reflecting the types and patterns of errors made by individuals with POB impairment. MDPI 2020-06-15 /pmc/articles/PMC7517200/ /pubmed/33286434 http://dx.doi.org/10.3390/e22060662 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Haluts, Neta Trippa, Massimiliano Friedmann, Naama Treves, Alessandro Professional or Amateur? The Phonological Output Buffer as a Working Memory Operator |
title | Professional or Amateur? The Phonological Output Buffer as a Working Memory Operator |
title_full | Professional or Amateur? The Phonological Output Buffer as a Working Memory Operator |
title_fullStr | Professional or Amateur? The Phonological Output Buffer as a Working Memory Operator |
title_full_unstemmed | Professional or Amateur? The Phonological Output Buffer as a Working Memory Operator |
title_short | Professional or Amateur? The Phonological Output Buffer as a Working Memory Operator |
title_sort | professional or amateur? the phonological output buffer as a working memory operator |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7517200/ https://www.ncbi.nlm.nih.gov/pubmed/33286434 http://dx.doi.org/10.3390/e22060662 |
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