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Ras M, Wyrwa M, Stachowiak J, Buchwald M, Nowik AM, Kroliczak G. Complex tools and motor-to-mechanical transformations. Sci Rep 2022; 12:8041. [PMID: 35577883 PMCID: PMC9110343 DOI: 10.1038/s41598-022-12142-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 04/27/2022] [Indexed: 12/24/2022] Open
Abstract
The ability to use complex tools is thought to depend on multifaceted motor-to-mechanical transformations within the left inferior parietal lobule (IPL), linked to cognitive control over compound actions. Here we show using neuroimaging that demanding transformations of finger movements into proper mechanical movements of functional parts of complex tools invoke significantly the right rather than left rostral IPL, and bilateral posterior-to-mid and left anterior intraparietal sulci. These findings emerged during the functional grasp and tool-use programming phase. The expected engagement of left IPL was partly revealed by traditional region-of-interest analyses, and further modeling/estimations at the hand-independent level. Thus, our results point to a special role of right IPL in supporting sensory-motor spatial mechanisms which enable an effective control of fingers in skillful handling of complex tools. The resulting motor-to-mechanical transformations involve dynamic hand-centered to target-centered reference frame conversions indispensable for efficient interactions with the environment.
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Affiliation(s)
- M Ras
- Action and Cognition Laboratory, Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, ul. Szamarzewskiego 89, 60-568, Poznan, Poland
| | - M Wyrwa
- Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, Poznan, Poland
| | - J Stachowiak
- Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, Poznan, Poland
| | - M Buchwald
- Action and Cognition Laboratory, Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, ul. Szamarzewskiego 89, 60-568, Poznan, Poland
| | - A M Nowik
- Action and Cognition Laboratory, Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, ul. Szamarzewskiego 89, 60-568, Poznan, Poland
| | - G Kroliczak
- Action and Cognition Laboratory, Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, ul. Szamarzewskiego 89, 60-568, Poznan, Poland.
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Kroliczak G, Buchwald M, Kleka P, Klichowski M, Potok W, Nowik AM, Randerath J, Piper BJ. Manual praxis and language-production networks, and their links to handedness. Cortex 2021; 140:110-127. [PMID: 33975084 DOI: 10.1016/j.cortex.2021.03.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 02/05/2021] [Accepted: 03/19/2021] [Indexed: 10/21/2022]
Abstract
While Liepmann was one of the first researchers to consider a relationship between skilled manual actions (praxis) and language for tasks performed "freely from memory", his primary focus was on the relations between the organization of praxis and left-hemisphere dominance. Subsequent attempts to apply his apraxia model to all cases he studied - including his first patient, a "non-pure right-hander" treated as an exception - left the praxis-handedness issue unresolved. Modern neuropsychological and recent neuroimaging evidence either showed closer associations of praxis and language, than between handedness and any of these two functions, or focused on their dissociations. Yet, present-day developments in neuroimaging and statistics allow us to overcome the limitations of the earlier work on praxis-language-handedness links, and to better quantify their interrelationships. Using functional magnetic resonance imaging (fMRI), we studied tool use pantomimes and subvocal word generation in 125 participants, including righthanders (NRH = 52), ambidextrous individuals (mixedhanders; NMH = 31), and lefthanders (NLH = 42). Laterality indices were calculated both in two critical cytoarchitectonic maps, and 180 multi-modal parcellations of the human cerebral cortex, using voxel count and signal intensity, and the most relevant regions of interest and their networks were further analyzed. We found that atypical organization of praxis was present in all handedness groups (RH = 25.0%, MH = 22.6%; LH = 45.2%), and was about two and a half times as common as atypical organization of language (RH = 3.8%; MH = 6.5%; LH = 26.2%), contingent on ROI selection/LI-calculation method. Despite strong associations of praxis and language, regardless of handedness and typicality, dissociations of atypically represented praxis from typical left-lateralized language were common (~20% of cases), whereas the inverse dissociations of atypically represented language from typical left-lateralized praxis were very rare (in ~2.5% of all cases). The consequences of the existence of such different phenotypes for theoretical accounts of manual praxis, and its links to language and handedness are modeled and discussed.
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Affiliation(s)
- Gregory Kroliczak
- Action and Cognition Laboratory, Adam Mickiewicz University, Poznan, Poland; Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, Poznan, Poland.
| | - Mikolaj Buchwald
- Action and Cognition Laboratory, Adam Mickiewicz University, Poznan, Poland
| | - Pawel Kleka
- Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, Poznan, Poland
| | - Michal Klichowski
- Action and Cognition Laboratory, Adam Mickiewicz University, Poznan, Poland; Faculty of Educational Studies, Adam Mickiewicz University, Poznan, Poland
| | - Weronika Potok
- Neural Control of Movement Laboratory, Department of Health Sciences and Technology, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Agnieszka M Nowik
- Action and Cognition Laboratory, Adam Mickiewicz University, Poznan, Poland; Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, Poznan, Poland
| | - Jennifer Randerath
- University of Konstanz, Konstanz, Germany; Lurija Institute for Rehabilitation Sciences and Health Research at the University of Konstanz, Konstanz, Germany
| | - Brian J Piper
- Department of Medical Education, Geisinger Commonwealth School of Medicine, Scranton, PA, USA
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