Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation

We investigated the role of the human medio-temporal complex (hMT+) in the memory encoding and storage of a sequence of four coherently moving random dot kinematograms (RDKs), by applying repetitive transcranial magnetic stimulation (rTMS) during an early or late phase of the retention interval. Mor...

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Autores principales:	Andrea Pavan, Filippo Ghin, Gianluca Campana
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	visual short-term memory repetitive transcranial magnetic stimulation visual memory precision serial memory effects Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571
Acceso en línea:	https://doaj.org/article/7ebca7ba0107451790c92ca9d484c82f
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spelling	oai:doaj.org-article:7ebca7ba0107451790c92ca9d484c82f2021-11-25T16:57:59ZVisual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation10.3390/brainsci111114712076-3425https://doaj.org/article/7ebca7ba0107451790c92ca9d484c82f2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3425/11/11/1471https://doaj.org/toc/2076-3425We investigated the role of the human medio-temporal complex (hMT+) in the memory encoding and storage of a sequence of four coherently moving random dot kinematograms (RDKs), by applying repetitive transcranial magnetic stimulation (rTMS) during an early or late phase of the retention interval. Moreover, in a second experiment, we also tested whether disrupting the functional integrity of hMT+ during the early phase impaired the precision of the encoded motion directions. Overall, results showed that both recognition accuracy and precision were worse in middle serial positions, suggesting the occurrence of primacy and recency effects. We found that rTMS delivered during the early (but not the late) phase of the retention interval was able to impair not only recognition of RDKs, but also the precision of the retained motion direction. However, such impairment occurred only for RDKs presented in middle positions along the presented sequence, where performance was already closer to chance level. Altogether these findings suggest an involvement of hMT+ in the memory encoding of visual motion direction. Given that both position sequence and rTMS modulated not only recognition but also the precision of the stored information, these findings are in support of a model of visual short-term memory with a variable resolution of each stored item, consistent with the assigned amount of memory resources, and that such item-specific memory resolution is supported by the functional integrity of area hMT+.Andrea PavanFilippo GhinGianluca CampanaMDPI AGarticlevisual short-term memoryrepetitive transcranial magnetic stimulationvisual memory precisionserial memory effectsNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571ENBrain Sciences, Vol 11, Iss 1471, p 1471 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	visual short-term memory repetitive transcranial magnetic stimulation visual memory precision serial memory effects Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571
spellingShingle	visual short-term memory repetitive transcranial magnetic stimulation visual memory precision serial memory effects Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Andrea Pavan Filippo Ghin Gianluca Campana Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation
description	We investigated the role of the human medio-temporal complex (hMT+) in the memory encoding and storage of a sequence of four coherently moving random dot kinematograms (RDKs), by applying repetitive transcranial magnetic stimulation (rTMS) during an early or late phase of the retention interval. Moreover, in a second experiment, we also tested whether disrupting the functional integrity of hMT+ during the early phase impaired the precision of the encoded motion directions. Overall, results showed that both recognition accuracy and precision were worse in middle serial positions, suggesting the occurrence of primacy and recency effects. We found that rTMS delivered during the early (but not the late) phase of the retention interval was able to impair not only recognition of RDKs, but also the precision of the retained motion direction. However, such impairment occurred only for RDKs presented in middle positions along the presented sequence, where performance was already closer to chance level. Altogether these findings suggest an involvement of hMT+ in the memory encoding of visual motion direction. Given that both position sequence and rTMS modulated not only recognition but also the precision of the stored information, these findings are in support of a model of visual short-term memory with a variable resolution of each stored item, consistent with the assigned amount of memory resources, and that such item-specific memory resolution is supported by the functional integrity of area hMT+.
format	article
author	Andrea Pavan Filippo Ghin Gianluca Campana
author_facet	Andrea Pavan Filippo Ghin Gianluca Campana
author_sort	Andrea Pavan
title	Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation
title_short	Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation
title_full	Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation
title_fullStr	Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation
title_full_unstemmed	Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation
title_sort	visual short-term memory for coherent and sequential motion: a rtms investigation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7ebca7ba0107451790c92ca9d484c82f
work_keys_str_mv	AT andreapavan visualshorttermmemoryforcoherentandsequentialmotionartmsinvestigation AT filippoghin visualshorttermmemoryforcoherentandsequentialmotionartmsinvestigation AT gianlucacampana visualshorttermmemoryforcoherentandsequentialmotionartmsinvestigation
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Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation

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