scholarly journals The role of the superior parietal lobule in lexical processing of sign language: Insights from fMRI and TMS

Cortex ◽  
2021 ◽  
Vol 135 ◽  
pp. 240-254
Author(s):  
A. Banaszkiewicz ◽  
Ł. Bola ◽  
J. Matuszewski ◽  
M. Szczepanik ◽  
B. Kossowski ◽  
...  
Keyword(s):  
Sign Language ◽  
Lexical Processing ◽  
Superior Parietal Lobule ◽  
Parietal Lobule

The role of human left superior parietal lobule in body part localization

2004 ◽  
Vol 55 (5) ◽  
pp. 749-751 ◽  
Author(s):  
Olivier Felician ◽  
Patricia Romaiguère ◽  
Jean-Luc Anton ◽  
Bruno Nazarian ◽  
Muriel Roth ◽  
...  
Keyword(s):  
Body Part ◽  
Superior Parietal Lobule ◽  
Parietal Lobule

scholarly journals The Role of the Caudal Superior Parietal Lobule in Updating Hand Location in Peripheral Vision: Further Evidence from Optic Ataxia

PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e46619 ◽  
Author(s):  
Joshua A. Granek ◽  
Laure Pisella ◽  
Annabelle Blangero ◽  
Yves Rossetti ◽  
Lauren E. Sergio
Keyword(s):  
Peripheral Vision ◽  
Superior Parietal Lobule ◽  
Optic Ataxia ◽  
Parietal Lobule

Audio-Visual Multisensory Integration in Superior Parietal Lobule Revealed by Human Intracranial Recordings

2006 ◽  
Vol 96 (2) ◽  
pp. 721-729 ◽  
Author(s):  
Sophie Molholm ◽  
Pejman Sehatpour ◽  
Ashesh D. Mehta ◽  
Marina Shpaner ◽  
Manuel Gomez-Ramirez ◽  
...  
Keyword(s):  
Multisensory Integration ◽  
Visual Stimulation ◽  
Multisensory Processing ◽  
Human Subjects ◽  
Superior Parietal Lobule ◽  
Sensory Inputs ◽  
Visual Inputs ◽  
Parietal Lobule ◽  
Intracranial Recordings

Intracranial recordings from three human subjects provide the first direct electrophysiological evidence for audio-visual multisensory processing in the human superior parietal lobule (SPL). Auditory and visual sensory inputs project to the same highly localized region of the parietal cortex with auditory inputs arriving considerably earlier (30 ms) than visual inputs (75 ms). Multisensory integration processes in this region were assessed by comparing the response to simultaneous audio-visual stimulation with the algebraic sum of responses to the constituent auditory and visual unisensory stimulus conditions. Significant integration effects were seen with almost identical morphology across the three subjects, beginning between 120 and 160 ms. These results are discussed in the context of the role of SPL in supramodal spatial attention and sensory-motor transformations.

scholarly journals Transcranial magnetic stimulation during British Sign Language production reveals monitoring of discrete linguistic units in left superior parietal lobule

2019 ◽  
Author(s):  
David Vinson ◽  
Neil Fox ◽  
Joseph T. Devlin ◽  
Karen Emmorey ◽  
Gabriella Vigliocco
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Sign Language ◽  
Language Production ◽  
Magnetic Stimulation ◽  
Proprioceptive Information ◽  
Superior Parietal Lobule ◽  
Visually Guided ◽  
British Sign Language ◽  
Parietal Lobule ◽  
British Sign

AbstractSuccessful human hand and arm movements are typically carried out by combining visual, motoric, and proprioceptive information in planning, initiation, prediction, and control. The superior parietal lobule (SPL) has been argued to play a key role in integrating visual and motoric information particularly during grasping of objects and other such tasks which prioritise visual information. However, sign language production also engages SPL even though fluent signers do not visually track their hands or fixate on target locations. Does sign language production simply rely on the motoric/ proprioceptive processes engaged in visually guided action, or do the unique characteristics of signed languages change these processes? Fifteen fluent British Sign Language users named pictures while we administered transcranial magnetic stimulation (TMS) to left SPL, a control site, or no TMS. TMS to SPL had very specific effects: an increased rate of (sign-based) phonological substitution errors for complex two-handed signs (those requiring hand contact), but TMS did not slow or otherwise impair performance. Thus, TMS decreased the likelihood of detecting or correcting phonological errors during otherwise successful bimanual coordination, but it did not noticeably alter fine movement control. These findings confirm that for fluent signers SPL has adapted to monitor motor plans for discrete hand configurations retrieved from memory as well as more fine-grained aspects of visually guided actions.

Lateralization of lexical processing in monolinguals and bilinguals

2021 ◽  
pp. 136700692110188
Author(s):  
Filiz Mergen ◽  
Gulmira Kuruoglu
Keyword(s):  
Lexical Processing ◽  
Response Times ◽  
Visual Fields ◽  
Decision Task ◽  
Bilingual Speakers ◽  
Visual Hemifield ◽  
Significant Difference ◽  
Brain Correlates ◽  
Orthographic Neighbors

Aims and objectives: This study aims to investigate how lexical processing (LP) is organized in early Turkish–English bilinguals and Turkish monolinguals. Methodology: We used a visual hemifield paradigm where bilingual ( n = 48) and monolingual ( n = 53) participants performed a lexical decision task. Bilingual participants performed the task in both their languages. Data and analysis: We recorded response times (RTs) and the accuracy rates (ARs) of the participants. An analysis of variance and t-test were run to analyze the bilingual and monolingual data, respectively. Findings: The results obtained from the analysis of the RTs and ARs for the Turkish and English words showed a balanced hemispheric organization in LP in bilingual speakers. The RTs for Turkish words in the monolingual group provided supportive evidence for the predominant role of the left hemisphere in LP. However, no significant difference was found in the accuracy of their answers, suggesting that the monolingual participants’ performance was not influenced by visual field of presentation of the words. Finally, the comparison of the two groups revealed that bilingual participants’ performance was inferior to monolinguals’ in speed and accuracy of processing of words presented in both visual fields. This result gives further support for the differential representation of LP in monolinguals and bilinguals. Originality: The psycholinguistic literature abounds with studies of LP in bilinguals and monolinguals from a variety of language backgrounds; however, there is much less data regarding the brain correlates of LP in Turkish–English bilinguals and Turkish monolinguals. Implications: Since Turkish–English bilinguals and Turkish monolinguals are underrepresented in the literature as compared to the population who speak other languages with alphabetic writing, this study provides preliminary data for future studies. Limitations: We did not control for gender or lexical factors such as orthographic neighbors when designing the word sets used as stimuli.

Mental maze solving: directional fMRI tuning and population coding in the superior parietal lobule

2005 ◽  
Vol 165 (3) ◽  
pp. 273-282 ◽  
Author(s):  
Pavlos Gourtzelidis ◽  
Charidimos Tzagarakis ◽  
Scott M. Lewis ◽  
David A. Crowe ◽  
Edward Auerbach ◽  
...  
Keyword(s):  
Population Coding ◽  
Superior Parietal Lobule ◽  
Parietal Lobule

What can size tell us about abstract conceptual processing?

2021 ◽  
Author(s):  
Bo Yao ◽  
Jack Edward Taylor ◽  
Sara C Sereno
Keyword(s):  
Congruency Effect ◽  
Lexical Processing ◽  
Task Demands ◽  
Abstract Concepts ◽  
Physical Size ◽  
Conceptual Processing ◽  
Task Effects ◽  
Mental Worlds ◽  
Size Congruency

Embodied cognition theories propose that abstract concepts can be embodied via metaphorical extensions from experiences of the physical or the mental worlds. In three experiments, we explored how semantic size (e.g., the magnitude, dimension or extent of an object or a concept) of abstract concepts is mentally represented. We show that abstract size is metaphorically associated with the physical size of concrete objects (Experiment 1) and can produce a semantic-font size congruency effect comparable to that demonstrated in concrete words during online lexical processing (Experiment 2). Critically, this size congruency effect is large when a word is judged by its size but significantly smaller when it is judged by its emotionality (Experiment 3). Our results suggest that semantic size of abstract concepts can be represented in physical size and that such experiences are variably engaged under different task demands. The present findings advocate flexible embodiment of semantic representations, with an emphasis on the role of task effects on conceptual processing.

scholarly journals Visuality Without Form: Video-Mediated Communication and Research Practice Across Disciplinary Contexts

2018 ◽  
Vol 25 (4) ◽  
pp. 417-431 ◽  
Author(s):  
Rebekah Cupitt ◽  
Per-Anders Forstorp ◽  
Ann Lantz
Keyword(s):  
Sign Language ◽  
Interdisciplinary Research ◽  
Meaning Making ◽  
Research Practice ◽  
Mediated Communication ◽  
Scholarly Research ◽  
Video Meeting ◽  
Television Producers

Visuality is a concept that crosses boundaries of practice and meaning, making it an ideal subject for interdisciplinary research. In this article, we discuss visuality using a fragment from a video meeting of television producers at Swedish Television’s group for programming in Swedish Sign Language. This example argues for the importance of recognizing the diversity of analytical and practice-derived visualities and their effect on the ways in which we interpret cultures. These different visualities have consequences for the methods and means with which we present scholarly research. The role of methods, methodology, and analysis of visual practices in an organizational and bilingual setting are key. We explore the challenges of incorporating deaf visualities, hearing visualities, and different paradigms of interdisciplinary research as necessary when visibility, invisibility, and their materialities are of concern. We conclude that in certain contexts, breaking with disciplinary traditions makes visible that which is otherwise invisible.

scholarly journals Ultra-high field parallel imaging of the superior parietal lobule during mental maze solving

2008 ◽  
Vol 187 (4) ◽  
pp. 551-561 ◽  
Author(s):  
Trenton A. Jerde ◽  
Scott M. Lewis ◽  
Ute Goerke ◽  
Pavlos Gourtzelidis ◽  
Charidimos Tzagarakis ◽  
...  
Keyword(s):  
High Field ◽  
Parallel Imaging ◽  
Superior Parietal Lobule ◽  
Ultra High Field ◽  
Field Parallel ◽  
Parietal Lobule
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