Notational usage modulates attention networks in binumerates
Multicultural environments require learning multiple number notations wherein some are encountered more frequently than others. This leads to differences in exposure and consequently differences in usage between notations. We find that differential notational usage imposes a significant neurocogniti...
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doaj-70b8002d343f4865be492fa084509afe2020-11-25T02:38:15ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612014-05-01810.3389/fnhum.2014.0032677089Notational usage modulates attention networks in binumeratesAtesh eKoul0Vaibhav eTyagi1Nandini Chatterjee Singh2National Brain Research CentreNational Brain Research CentreNational Brain Research CentreMulticultural environments require learning multiple number notations wherein some are encountered more frequently than others. This leads to differences in exposure and consequently differences in usage between notations. We find that differential notational usage imposes a significant neurocognitive load on number processing. Despite simultaneous acquisition, forty-two adult binumerate populations, familiar with two positional writing systems namely Hindu Nagari digits and Hindu Arabic digits, reported significantly lower preference and usage for Nagari as compared to Arabic. Twenty-four participants showed significantly increased reaction times and reduced accuracy while performing magnitude comparison tasks in Nagari with respect to Arabic. Functional magnetic resonance imaging revealed that processing Nagari elicited significantly greater activity in number processing and attention networks. A direct subtraction of networks for Nagari and Arabic notations revealed a neural circuit comprising of bilateral intra-parietal sulcus, inferior and mid frontal gyri, fusiform gyrus and the anterior cingulate cortex (FDR p<0.005). Additionally, whole brain correlation analysis showed that activity in the left inferior parietal region was modulated by task performance in Nagari. We attribute the increased activation in Ng to increased task difficulty due to infrequent exposure and usage. Our results reiterate the role of the left intra-parietal sulcus in modulating performance in numeric tasks and highlight that of the attention network for monitoring symbolic notation mode in binumerates.http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00326/fullAttentionfMRInotationnumeracyBinumeratesNagari |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Atesh eKoul Vaibhav eTyagi Nandini Chatterjee Singh |
spellingShingle |
Atesh eKoul Vaibhav eTyagi Nandini Chatterjee Singh Notational usage modulates attention networks in binumerates Frontiers in Human Neuroscience Attention fMRI notation numeracy Binumerates Nagari |
author_facet |
Atesh eKoul Vaibhav eTyagi Nandini Chatterjee Singh |
author_sort |
Atesh eKoul |
title |
Notational usage modulates attention networks in binumerates |
title_short |
Notational usage modulates attention networks in binumerates |
title_full |
Notational usage modulates attention networks in binumerates |
title_fullStr |
Notational usage modulates attention networks in binumerates |
title_full_unstemmed |
Notational usage modulates attention networks in binumerates |
title_sort |
notational usage modulates attention networks in binumerates |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Human Neuroscience |
issn |
1662-5161 |
publishDate |
2014-05-01 |
description |
Multicultural environments require learning multiple number notations wherein some are encountered more frequently than others. This leads to differences in exposure and consequently differences in usage between notations. We find that differential notational usage imposes a significant neurocognitive load on number processing. Despite simultaneous acquisition, forty-two adult binumerate populations, familiar with two positional writing systems namely Hindu Nagari digits and Hindu Arabic digits, reported significantly lower preference and usage for Nagari as compared to Arabic. Twenty-four participants showed significantly increased reaction times and reduced accuracy while performing magnitude comparison tasks in Nagari with respect to Arabic. Functional magnetic resonance imaging revealed that processing Nagari elicited significantly greater activity in number processing and attention networks. A direct subtraction of networks for Nagari and Arabic notations revealed a neural circuit comprising of bilateral intra-parietal sulcus, inferior and mid frontal gyri, fusiform gyrus and the anterior cingulate cortex (FDR p<0.005). Additionally, whole brain correlation analysis showed that activity in the left inferior parietal region was modulated by task performance in Nagari. We attribute the increased activation in Ng to increased task difficulty due to infrequent exposure and usage. Our results reiterate the role of the left intra-parietal sulcus in modulating performance in numeric tasks and highlight that of the attention network for monitoring symbolic notation mode in binumerates. |
topic |
Attention fMRI notation numeracy Binumerates Nagari |
url |
http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00326/full |
work_keys_str_mv |
AT ateshekoul notationalusagemodulatesattentionnetworksinbinumerates AT vaibhavetyagi notationalusagemodulatesattentionnetworksinbinumerates AT nandinichatterjeesingh notationalusagemodulatesattentionnetworksinbinumerates |
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