Gregory Kroliczak

Gregory Kroliczak
Adam Mickiewicz University | UAM · Faculty of Psychology and Cognitive Science

Ph.D. in Neuroscience, Ph.D. in Philosophy

About

86
Publications
14,760
Reads
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1,461
Citations
Introduction
I have a PhD both in philosophy and neuroscience, yet my current research belongs primarily to the area of cognitive psychology. The main goal of this research is a development of knowledge on relations between the neural organization of planning simple and complex manual skills, the use of tool-related concepts and gestures, and the control of basic language functions. Methods used in my lab: fMRI, TMS, EEG, eye tracking, and simple 'behavioral' tests.
Additional affiliations
December 2019 - present
Adam Mickiewicz University in Poznań, Poland
Position
  • Professor (Full)
Description
  • I teach 3 courses (Introduction to Cognitive Psychology; Behavioural and Cognitive Neuroscience; Advances in Neuroscience). My Action & Cognition Laboratory is focused on "action/perception/cognition" research, primarily with the use of fMRI and TMS.
June 2012 - November 2019
Adam Mickiewicz University in Poznań, Poland
Position
  • Professor (Associate)
October 2010 - May 2012
Adam Mickiewicz University in Poznań, Poland
Position
  • Professor (Assistant)
Education
September 2001 - April 2005
The University of Western Ontario
Field of study
  • Neuroscience
September 1999 - September 2001
The University of Western Ontario
Field of study
  • Neuroscience

Publications

Publications (86)
Article
The left supramarginal gyrus (SMG) is a critical structure in tool use actions, including such simple acts as selection of appropriate grasps and, if necessary, their on-line corrections. Yet, its temporal contribution to initial planning of functional grasps of tools is largely unknown. We used MRI-guided, event-related transcranial magnetic stimu...
Article
The neural bases of haptically guided interactions with tools are largely unknown. Whereas in the visual domain there is clear evidence for left lateralization of the networks underlying the guidance of actions involving tools, comparable evidence in haptic modality is missing. Therefore, we examined whether the temporo-parieto-frontal networks res...
Article
Full-text available
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 – in...
Article
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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 comple...
Article
Full-text available
The praxis representation network (PRN) of the left cerebral hemisphere is typically linked to the control of functional interactions with familiar tools. Surprisingly, little is known about the PRN engagement in planning and execution of tool-directed actions motivated by non-functional but purposeful action goals. Here we used functional neuroima...
Article
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Atypical representations of praxis and language were studied in two forms and combinations: bilateral organization, and right lateralization, independently for each function; when the atypically represented praxis dissociates from typically lateralized language; and when both praxis and language have atypical forms. Direct differences between bilat...
Data
Using functional magnetic resonance imaging (fMRI), we studied links between manual praxis (planned and executed tool use pantomimes), language (in subvocal word generation task) and handedness in 125 participants, including righthanders (N=52), ambidextrous individuals (mixedhanders; N=31), and lefthanders (N=42). The tested sample included 64 fe...
Article
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Following the outbreak of COVID-19 pandemic, governments around the globe coerced their citizens to adhere to preventive health behaviours, aiming to reduce the effective reproduction numbers of the virus. Driven by game theoretic considerations and inspired by the work of US National Research Council's Committee on Food Habits (1943) during WWII,...
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One of the most critical skills behind consumer's behavior is the ability to assess whether a price after a discount is a real bargain. Yet, the neural underpinnings and cognitive mechanisms associated with such a skill are largely unknown. While there is general agreement that the posterior parietal cortex (PPC) on the left is critical for mental...
Article
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Zarówno badania neuropsychologiczne na pacjentach, jak i tradycyjne raporty neuroobrazowe od osób zdrowych, pokazują, że kluczowe dla umysłowych obliczeń arytmetycznych obszary mózgu znajdują się w płatach ciemieniowych oraz, co kontrowersyjne, w lewym płacie czołowym. W ostatnich latach kilka publikacji opartych na metodzie magnetoencefalografii o...
Article
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Współczesne prace neuroobrazowe ujawniają istnienie, niezależnych od ręczności, różnych fenotypów rozkładu funkcji mózgowych, za którymi stoją złożone i wielowymiarowe obwody neuronalne. Eksplorację i wyjaśnienie przejść pomiędzy odmiennymi fenotypami funkcji może ułatwić badanie osób leworęcznych, wśród których znacznie częściej występują przypadk...
Article
Full-text available
The performance of learned manual gestures (praxis) and the production of speech are thought to depend on related neural processes. If this relationship is not invoked by an unknown, third variable then shifts in their laterality, including dissociations of these two functions, would be unlikely unless the sharing of some neural resources with othe...
Article
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Background The impact of bilingualism on lateralized brain functions such as praxis – the control of skilled actions – and language representations themselves, particularly in the auditory domain, is still largely unknown. Recent stud-ies suggest that bilingualism affects both basic (fundamental frequency) sound and action-related speech pro-cessin...
Article
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While the preparatory neural mechanisms of real and imagined body movements have been extensively studied, the underpinnings of self-initiated, voluntary mental acts are largely unknown. Therefore, using electroencephalography (EEG), we studied the time course and patterns of changes in brain activity associated with purely mental processes which s...
Article
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One of the greatest challenges in functional magnetic resonance imaging (fMRI) research using real objects as stimuli is their timely delivery and (pseudo)randomized presentation. To this end, we designed an apparatus which solves the majority of problems that fMRI researchers may encounter during testing. The display apparatus – here: delivering o...
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Editorial on the Research Topic Manual Skills, Handedness, and the Organization of Language in the Brain: Hand preference and cerebral dominance for some aspects of language processing are hallmarks of human brain functioning. Yet, their mutual relationships, similar to interrelations between hemispheric dominance for low-level sensorimotor control...
Article
Objectives: We used multivoxel pattern analysis (MVPA) to investigate neural selectivity for grasp planning within the left-lateralized temporo-parieto-frontal network of areas (praxis representation network, PRN) typically associated with tool-related actions, as studied with traditional neuroimaging contrasts. Methods: We used data from 20 par...
Conference Paper
Full-text available
The impact of bilingualism on lateralized brain functions such as praxis – the control of skilled actions, and language representations themselves, particularly in the auditory domain, is still largely unknown. Recent studies suggest that bilingualism affects both basic (fundamental frequency) sound and action-related speech processing. Whether it...
Article
Full-text available
Ludzie najczęściej wykazują dominację prawej ręki w spontanicznym wykonywaniu drobnych codziennych czynności oraz dominację lewej półkuli w kontroli złożonych działań manualnych i w posługiwaniu się językiem. Jeśli te zachowania łączy wspólna specjalizacja w korze mózgowej, to powinny one być podobnie zorganizowane w mózgu bez względu na ręczność....
Article
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Using functional magnetic resonance imaging (fMRI) in 63 healthy participants, including left-handed and ambidextrous individuals, we tested how atypical lateralization of language—i. e., bilateral or right hemispheric language representation—differs from the typical left-hemisphere dominance. Although regardless of their handedness, all 11 partici...
Article
Potential links between language and numbers and the laterality of symbolic number representations in the brain are still debated. Furthermore, reports on bilingual individuals indicate that the language-number interrelationships might be quite complex. Therefore, we carried out a visual half-field (VHF) and dichotic listening (DL) study with actio...
Article
Full-text available
Objectives: Neuropsychological and neuroimaging evidence indicates that tool use knowledge and abilities are represented in the praxis representation network (PRN) of the left cerebral hemisphere. We investigated whether PRN would also underlie the planning of function-appropriate grasps of tools, even though such an assumption is inconsistent wit...
Article
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Functional magnetic resonance imaging (fMRI) adaptation (a.k.a. repetition suppression) paradigm was used to test if semantic information contained in object-related (transitive) pantomimes and communicative (intransitive) gestures is represented differently in the occipito-temporal cortex. Participants watched 2.75 s back-to-back videos where the...
Presentation
The brain mechanisms underlying tool use are highly lateralized to the left cerebral hemisphere. The present study aimed to highlight the temporal contribution of one of the critical nodes of this left-lateralized network to planning functional grasps of tools. We focused on the left supramarginal gyrus (SMG), whose role - as evidenced by functiona...
Article
Full-text available
The neural bases of haptically-guided grasp planning and execution are largely unknown, especially for stimuli having no visual representations. Therefore, we used functional magnetic resonance imaging (fMRI) to monitor brain activity during haptic exploration of novel 3D complex objects, subsequent grasp planning, and the execution of the pre-plan...
Data
All the objects, their orders, and orientations used in the main experiment. Note, that there were five runs for each subject and one of the sets was repeated.
Data
Neural activity associated with haptic exploration of simple vs. complex objects. This contrast revealed modulations in a widespread network of areas, resembling the default mode network.
Article
Full-text available
Background. The Psychology Experiment Building Language (PEBL) software consists of over one-hundred computerized tests based on classic and novel cognitive neuropsychology and behavioral neurology measures. Although the PEBL tests are becoming more widely utilized, there is currently very limited information about the psychometric properties of th...
Article
Full-text available
Background. The Psychology Experiment Building Language (PEBL) software consists of over one-hundred computerized tests based on classic cognitive neuropsychology and behavioral neurology measures. Although the PEBL tests are becoming more widely utilized, there is currently very limited information about the psychometric properties of these measur...
Conference Paper
The way we interact with manipulable objects varies substantially depending on the goal of the intended action. Surprisingly, very little is known about the neural underpinnings of planning disparate actions and interactions taken with tools, e.g., whether or not the praxis representation network (PRN) of the left cerebral hemisphere is involved in...
Conference Paper
While neuroscientific and behavioral studies indicate that the intention to properly use, transmit, or displace a tool may engage different mechanisms in the brain, no study has directly compared activation patterns associated with the control of actions motivated by such distinct goals. Here, we used functional magnetic resonance imaging to establ...
Article
Full-text available
Background. The Psychology Experiment Building Language (PEBL) software consists of over one-hundred computerized tests based on classic cognitive neuropsychology and behavioral neurology measures. Although the PEBL tests are becoming more widely utilized, there is currently very limited information about the psychometric properties of these measur...
Article
Full-text available
When reading, proficient bilinguals seem to engage the same cognitive circuits regardless of the language in use. Yet, whether or not such "bilingual" mechanisms would be lateralized in the same way in distinct - single or dual - language contexts is a question for debate. To fill this gap, we tested 18 highly proficient Polish (L1) - English (L2)...
Article
Full-text available
The control of gesture is one of the most left-lateralized functions, and the insular cortex is one of the most left-biased structures in the human brain. Therefore, we investigated whether structural asymmetries of the insula are linked to the organization of functional activity during gesture planning. We reconstructed and parcellated the insular...
Article
Full-text available
Although current neuroscience and behavioral studies provide substantial understanding of tool representations (e.g., the processing of tool-­related affordances) in the human brain, most of this knowledge is limited to right-handed individuals with typical organization of cognitive and manual skills. Therefore, any insights from these lines of res...
Conference Paper
Neuropsychological evidence suggests the existence of independent representations for functional grasp and tool use. This idea was tested using fMRI in 16 right-handed participants who planned and executed a functionally-appropriate pantomimed grasp of a tool (vs. a non-tool control object), and simulated the use of a tool (vs. a control manual tas...
Conference Paper
Right-handers demonstrate a partial dissociation of areas involved in the control of functional grasp and tool use. We tested whether or not a similar effect could be also observed in left-handed individuals. Sixteen participants were tested using fMRI during planning and execution of a functionally-appropriate pantomimed grasp of a tool (vs. non-t...
Conference Paper
When planning function-appropriate grasping actions with their right hands, right-handers show left-lateralized cerebral activity in caudal temporal, inferior parietal, and middle frontal cortices, especially when demanding visuomotor transformations are required. We investigated whether or not similar asymmetries are evident when such actions are...
Article
Full-text available
The ability to decide which of the two stimuli is presented first can be probed using a temporal order judgment (TOJ) task. When the stimuli are delivered to the fingers, TOJ decisions can be confounded by the fact that the hands can be moved to different locations in space. How and where this confounded information is processed in the brain is poo...
Article
Full-text available
Although the control of meaningful gestures is one of the most left-lateralized functions, the relative contribution of the two hemispheres to their processing is still debated. We tested the effects of primes appearing in the left or right visual field in the form of pictures (Experiment 1), and words (Experiment 2) on categorization of movies sho...
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The present study consisted of two experiments. The goal of the first experiment was to establish the just noticeable differences for the fundamental frequency of the vowel /u/ by using the 2AFC method. We obtained the threshold value for 27 cents. This value is larger than the motor reaction values which had been observed in previous experiments (...
Article
Neuroimaging evidence from right-handers indicates that planning transitive and intransitive gestures engages a common left-lateralized parieto-frontal network. Current work also suggests that a common system mediates these skills in left-handers. Although recent clinical data reveal cases of selective, task-dependent dissociations between the cont...
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Chapter
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4.1 Introduction Imagine yourself picking up little stones during a relaxing walk on the seaside. Although pretty much effortless, grasping of a pebble on a sandy beach is quite a feat from the point of view of the neural processing involved. After all, even during such a simple visuomotor task the brain has to localize and identify the desired tar...
Article
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In the majority of humans, the left hemisphere of the brain plays a decisive role both in the control of language and skilled manual gestures. Moreover, in right-handed people, the left-hemispheric regions of the cerebral cortex control the actions of the hand and fingers of the dominant limb, including reaching movements towards targets, grasping,...
Article
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The supplementary motor area (SMA) is involved in planning limb movements. An important component of such planning is the prediction of the sensory consequences of action. The authors used transcranial magnetic stimulation (TMS) to probe the contribution of SMA to motor planning during a predictive load-bearing task. Single TMS pulses were delivere...
Article
Humans typically show left-hemisphere dominance both for language and manual gestures. If this reflects a dependence of these behaviors on a common cerebral specialization, then healthy left-handers with atypical organization of language should show a similar pattern for gesture. Consistent with this hypothesis, we report fMRI data indicating that...
Article
Recently we reported the case of MB, a young man showing improved residual visual processing in his blind (upper left) field when he placed his ipsilateral hand near the target object. We argued that placing the hand near the target allowed the target to fall within the receptive field of visual-tactile bimodal cells linked to the hand, and that th...
Conference Paper
We tested the effects of different face displays — the illusory face, and its normal and hollow counterparts — on the perception of target position and the control of target-directed flicking. Methods. 8 right-handed participants (1) estimated with a paper-based method, and with slow pointing movements, the perceived location of a small target pres...
Article
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Ren et al. (J Neurophysiol 96:1464-1477, 2006) found that saccades to visual targets became less accurate when somatosensory information about hand location was added, suggesting that saccades rely mainly on vision. We conducted two kinematic experiments to examine whether or not reaching movements would also show such strong reliance on vision. In...
Article
Full-text available
Evidence from neuropsychology and neuroimaging implicates parietal and frontal areas of the left cerebral hemisphere in the representation of skills involving the use of tools and other artifacts. On the basis of neuropsychological data, it has been claimed that 1) independent mechanisms within the left hemisphere may support the representation of...
Article
Full-text available
We tested whether the control of real actions in an ever-changing environment would show any dependence on prior actions elicited by instructional cues a few seconds before. To this end, adaptation of the functional magnetic resonance imaging signal was measured while human participants sequentially grasped three-dimensional objects in an event-rel...
Article
Bimodal visual-tactile neurons respond to visual and/or tactile stimuli presented near the hands, arms, and face. The strength of bimodal-cell response to a visual stimulus depends on its proximity to the hand. We tested the hypothesis that hand proximity to a visual stimulus would influence unconscious residual vision in the blind field. MB is a 2...
Conference Paper
Full-text available
Objective: The purpose of our study was to learn how two different components of lexical-semantic (naming and associative categorization) are altered in probable Alzheimer´s disease (AD) and aging. Fifteen patients and eighteen healthy elderly (66-88 yeards old, who perform normally on the MMSE ), participate in the study. Both, patients and contro...