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Book ; Online: Manual Skills, Handedness, and the Organization of Language in the Brain

Króliczak, Gregory / Gonzalez, Claudia L. R. / Carey, David P.

2019

Keywords	Science: general issues ; Psychology ; hand preference ; cerebral dominance ; brain functioning ; sensorimotor control ; higher-order processing ; skilled actions ; praxis ; laterality ; spatial discrimination ; tool affordances
Size	1 electronic resource (163 pages)
Publisher	Frontiers Media SA
Document type	Book ; Online
Note	English ; Open Access
HBZ-ID	HT021230721
ISBN	9782889459681 ; 2889459683
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Book ; Online: Manual Asymmetries, Handedness and Motor Performance

Gonzalez, Claudia L. R. / Mason, Andrea Helen / Bryden, Pamela

2016

Abstract: The performance of most tasks with one hand, typically the right, is a uniquely human characteristic. Not only do people prefer to use one hand rather than the other, but also they usually perform tasks faster and more accurately with this hand. The ... ...

Abstract	The performance of most tasks with one hand, typically the right, is a uniquely human characteristic. Not only do people prefer to use one hand rather than the other, but also they usually perform tasks faster and more accurately with this hand. The study of manual asymmetries and what such performance differences between the two hands reveal about brain organization and motor function has been a topic of considerable research over the last several decades. The aim of this Research Topic is to review and further explore the origins of manual asymmetries and their relationship to handedness, unimanual and bimanual motor performance, and brain function. The articles included here involve original research conducted in humans or non-human models species, as well as theoretical perspectives, review articles, and meta-analyses
Keywords	Psychology ; Science (General)
Size	1 electronic resource (147 p.)
Publisher	Frontiers Media SA
Document type	Book ; Online
Note	English ; Open Access
HBZ-ID	HT020090584
ISBN	9782889198634 ; 2889198634
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Perception, action, and the body model.

Coelho, Lara A / Gonzalez, Claudia L R

Neuropsychologia

2024 Volume 196, Page(s) 108853

Abstract: In 1992, Goodale and Milner proposed to study the visual system based on function, thus dissociating vision for perception (ventral stream) and vision for action (dorsal stream). This became known as the Perception and Action model (PAM). Following the ... ...

Abstract	In 1992, Goodale and Milner proposed to study the visual system based on function, thus dissociating vision for perception (ventral stream) and vision for action (dorsal stream). This became known as the Perception and Action model (PAM). Following the PAM in the visual system, a somatosensory PAM was proposed including a body representation for perception and a separate for action. This review explores the body model of the hand and how it relates to the PAM. The body model refers to the internal representation of the body that is responsible for position sense. Previous research has shown that the representation of the hand features systematic distortions: an overestimation of hand width and an underestimation of finger length. These distortions have been reported using different paradigms, different body parts, and in various settings. Thus, body model distortions appear to be a characteristic of human body representation. If the body model of the hand is distorted, how can actions like reaching and grasping be accurate? We review evidence that body model distortions may in fact provide a functional benefit to our actions, that cortical maps in the somatosensory and motor cortices reflect these distortions, and that actions rely on a distorted body model. We argue that the body model is a product of both the ventral and dorsal somatosensory streams. Further, we suggest that the body model is an example of the inextricable link between the two streams.
MeSH term(s)	Humans ; Hand ; Fingers ; Body Image ; Hand Strength ; Proprioception ; Visual Perception ; Psychomotor Performance
Language	English
Publishing date	2024-03-13
Publishing country	England
Document type	Review ; Journal Article
ZDB-ID	207151-4
ISSN	1873-3514 ; 0028-3932
ISSN (online)	1873-3514
ISSN	0028-3932
DOI	10.1016/j.neuropsychologia.2024.108853
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Article ; Online: The distorted hand: systematic but 'independent' distortions in both explicit and implicit hand representations in young female adults.

Coelho, Lara A / Lee, Rachel / Gonzalez, Claudia L R

Experimental brain research

2022 Volume 241, Issue 1, Page(s) 175–186

Abstract: It has long been assumed that an accurate representation of the size and shape of one's body is necessary to successfully interact with the environment. Previous research has shown accurate representations when healthy participants make overt judgments ( ... ...

Abstract	It has long been assumed that an accurate representation of the size and shape of one's body is necessary to successfully interact with the environment. Previous research has shown accurate representations when healthy participants make overt judgments (i.e. explicit) about the size of their bodies. However, when body size is judged implicitly, studies have shown systematic distortions. One suggestion for these differences, is that explicit and implicit representations are informed by different sensory modalities. Explicit representations rely on vision whereas implicit representations are informed by haptics. We designed an experiment to investigate if explicit representations that are informed by haptics are more like implicit representation featuring systematic distortions. We asked female participants to estimate the size of their fingers and hands in three different tasks: an explicit-haptic, an implicit, and an explicit-vision task. The results showed that all three representations were distorted and furthermore, the distortions for each representation were different from one another. These results suggest that inaccurate finger and hand length are a stereotypical feature of body representation that is present in both visual and haptic domains. We discuss the results in relation to theories of body representation.
MeSH term(s)	Humans ; Adult ; Female ; Hand ; Fingers ; Body Image ; Judgment ; Body Size
Language	English
Publishing date	2022-11-21
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1201-4
ISSN	1432-1106 ; 0014-4819
ISSN (online)	1432-1106
ISSN	0014-4819
DOI	10.1007/s00221-022-06511-7
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Article ; Online: The distorted hand: systematic but ‘independent’ distortions in both explicit and implicit hand representations in young female adults

Coelho, Lara A. / Lee, Rachel / Gonzalez, Claudia L. R.

Exp Brain Res. 2023 Jan., v. 241, no. 1, p. 175-186

2023 , Page(s) 175–186

Abstract: It has long been assumed that an accurate representation of the size and shape of one’s body is necessary to successfully interact with the environment. Previous research has shown accurate representations when healthy participants make overt judgments ( ... ...

Abstract	It has long been assumed that an accurate representation of the size and shape of one’s body is necessary to successfully interact with the environment. Previous research has shown accurate representations when healthy participants make overt judgments (i.e. explicit) about the size of their bodies. However, when body size is judged implicitly, studies have shown systematic distortions. One suggestion for these differences, is that explicit and implicit representations are informed by different sensory modalities. Explicit representations rely on vision whereas implicit representations are informed by haptics. We designed an experiment to investigate if explicit representations that are informed by haptics are more like implicit representation featuring systematic distortions. We asked female participants to estimate the size of their fingers and hands in three different tasks: an explicit-haptic, an implicit, and an explicit-vision task. The results showed that all three representations were distorted and furthermore, the distortions for each representation were different from one another. These results suggest that inaccurate finger and hand length are a stereotypical feature of body representation that is present in both visual and haptic domains. We discuss the results in relation to theories of body representation.
Keywords	body size ; brain ; females ; vision
Language	English
Dates of publication	2023-01
Size	p. 175-186
Publishing place	Springer Berlin Heidelberg
Document type	Article ; Online
ZDB-ID	1201-4
ISSN	1432-1106 ; 0014-4819
ISSN (online)	1432-1106
ISSN	0014-4819
DOI	10.1007/s00221-022-06511-7
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Growing into your hand: the developmental trajectory of the body model.

Coelho, Lara A / Gonzalez, Claudia L R

Experimental brain research

2021 Volume 240, Issue 1, Page(s) 135–145

Abstract: We rely on accurate body representations to successfully interact with the environment. As adults, we rely on many years of experience with a body that has stayed relatively the same size. Children, however, go through periods of rapid growth and whether ...

Abstract	We rely on accurate body representations to successfully interact with the environment. As adults, we rely on many years of experience with a body that has stayed relatively the same size. Children, however, go through periods of rapid growth and whether or not their body representation matches this physical growth is unknown. To address this question, we examined the developmental trajectory of the body model of the hand. The body model is the representation of our bodies that underlies position sense. We recruited a group of children (8-16 years) and a control group of young adults (18-26 years) and asked them to complete the body model task. In this task, participants estimated the location of ten different landmarks (the tips and metacarpophalangeal joints of each of their five fingers). The position (XY location) of each estimate was tracked using an Optotrak camera. From the XY locations we derived hand width and finger length. Not surprisingly, children's physical hand width and finger length were smaller than adults but remarkably, the body model, was similar for both groups. This result indicates that children overestimate hand size and suggests that the body model is ahead of physical growth. This result contradicts the notion that body representation lags physical growth during puberty, accounting for the clumsy motor behaviour characteristic of teens. We discuss the results in relation to the different taxonomies of body representation and how an enlarged representation of the hand during childhood may influence action.
MeSH term(s)	Adolescent ; Body Image ; Child ; Fingers ; Hand ; Humans ; Proprioception ; Young Adult
Language	English
Publishing date	2021-10-15
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1201-4
ISSN	1432-1106 ; 0014-4819
ISSN (online)	1432-1106
ISSN	0014-4819
DOI	10.1007/s00221-021-06241-2
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Article ; Online: On the Neurocircuitry of Grasping: The influence of action intent on kinematic asymmetries in reach-to-grasp actions.

Flindall, Jason / Gonzalez, Claudia L R

Attention, perception & psychophysics

2019 Volume 81, Issue 7, Page(s) 2217–2236

Abstract: Evidence from electrophysiology suggests that nonhuman primates produce reach-to-grasp movements based on their functional end goal rather than on the biomechanical requirements of the movement. However, the invasiveness of direct-electrical stimulation ... ...

Abstract	Evidence from electrophysiology suggests that nonhuman primates produce reach-to-grasp movements based on their functional end goal rather than on the biomechanical requirements of the movement. However, the invasiveness of direct-electrical stimulation and single-neuron recording largely precludes analogous investigations in humans. In this review, we present behavioural evidence in the form of kinematic analyses suggesting that the cortical circuits responsible for reach-to-grasp actions in humans are organized in a similar fashion. Grasp-to-eat movements are produced with significantly smaller and more precise maximum grip apertures (MGAs) than are grasp-to-place movements directed toward the same objects, despite near identical mechanical requirements of the two subsequent (i.e., grasp-to-eat and grasp-to-place) movements. Furthermore, the fact that this distinction is limited to right-handed movements suggests that the system governing reach-to-grasp movements is asymmetric. We contend that this asymmetry may be responsible, at least in part, for the preponderance of right-hand dominance among the global population.
MeSH term(s)	Biomechanical Phenomena/physiology ; Female ; Functional Laterality/physiology ; Hand/physiology ; Hand Strength/physiology ; Humans ; Intention ; Male ; Movement/physiology ; Nerve Net/physiology ; Psychomotor Performance/physiology
Language	English
Publishing date	2019-07-07
Publishing country	United States
Document type	Journal Article ; Review
ZDB-ID	2464550-3
ISSN	1943-393X ; 1943-3921
ISSN (online)	1943-393X
ISSN	1943-3921
DOI	10.3758/s13414-019-01805-5
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Article ; Online: Simple preference evades simple prediction: Author's response to Tran & Voracek's commentary on Flindall and Gonzalez (2018).

Flindall, Jason / Gonzalez, Claudia L R

Laterality

2018 Volume 24, Issue 2, Page(s) 201–203

MeSH term(s)	Functional Laterality ; Hand Strength ; Surveys and Questionnaires
Language	English
Publishing date	2018-09-04
Publishing country	England
Document type	Journal Article ; Comment
ZDB-ID	2028955-8
ISSN	1464-0678 ; 1357-650X
ISSN (online)	1464-0678
ISSN	1357-650X
DOI	10.1080/1357650X.2018.1514620
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Article ; Online: Dual-task performance of speech and motor skill: verb generation facilitates grasping behaviour.

van Rooteselaar, Nicole / Beke, Clarissa / Gonzalez, Claudia L R

Experimental brain research

2020 Volume 238, Issue 2, Page(s) 453–463

Abstract: Pronouncing nouns or verbs while grasping distinctly alters movement. Changes in hand speed and final position occur according to the meaning of the words spoken. These results are typically found when executing a single movement paired with a single ... ...

Abstract	Pronouncing nouns or verbs while grasping distinctly alters movement. Changes in hand speed and final position occur according to the meaning of the words spoken. These results are typically found when executing a single movement paired with a single word. For example, pronouncing the word 'fast' increased the speed of the hand when reaching to grasp. Our objective was to compare how verb and noun fluency tasks interact with grasping behaviour in a grasp-to-construct task. Because previous imaging research shows that verb and noun production activates distinct neural areas, we reasoned that grasping outcomes would differ according to the category of word produced by participants. Specifically, we hypothesized that verb pronunciation would distinctly affect grasping behaviour compared to producing nouns. We recruited 38 young adults who performed a grasp-to-construct task and two different verbal fluency tasks. Participants completed each task (grasp, verb fluency, and noun fluency) separately as control conditions, and the grasping and each speaking task simultaneously for dual-task conditions. We found that during the dual-task condition, when generating nouns and grasping, participants made significantly more grasping errors (inaccurate grasps) compared to the control and verb dual-task conditions. Moreover, our results revealed a relationship between the number of verbs generated and grasping performance. Participants who generated more verbs were faster and more accurate during the motor component of the dual-task condition. This relationship was not observed when nouns were produced, indicating a unique relationship between verb production and functional grasping. The result is a facilitation effect, diminishing the negative outcome on motor control associated with increased cognitive load (as observed during noun pronunciation).
MeSH term(s)	Adult ; Executive Function/physiology ; Female ; Humans ; Male ; Motor Activity/physiology ; Motor Skills/physiology ; Psycholinguistics ; Speech/physiology ; Young Adult
Language	English
Publishing date	2020-01-17
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1201-4
ISSN	1432-1106 ; 0014-4819
ISSN (online)	1432-1106
ISSN	0014-4819
DOI	10.1007/s00221-020-05725-x
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Article ; Online: One brick at a time: Building a developmental profile of spatial abilities.

Aguilar Ramirez, Daniela E / Blinch, Jarrod / Gonzalez, Claudia L R

Developmental psychobiology

2021 Volume 63, Issue 6, Page(s) e22155

Abstract: Spatial abilities are not only fundamental for activities of daily living, but they are also markers of academic and professional success. It has remained a challenge, however, to understand their development across childhood and adolescence, partly ... ...

Abstract	Spatial abilities are not only fundamental for activities of daily living, but they are also markers of academic and professional success. It has remained a challenge, however, to understand their development across childhood and adolescence, partly because of the lack of spatial tasks that are appropriate across age groups. For example, the well-established paper-based mental rotation test (MRT) has been shown to be too difficult for children. In the current study, we tested girls and boys in three age groups: younger children (5-8-years-old), older children (9-12), and adolescents (13-17) on a hands-on visuospatial task using toy bricks: the brick-building task (BBT). Children completed a low- and a high-mental rotation demand (LMR and HMR) version of the BBT and the paper-based MRT. Correlations were found between all tasks. Children, especially females, found the HMR more challenging than the LMR condition, but all children successfully completed the BBT. In contrast, the MRT was too difficult for the younger children to solve performing at chance. Given this result and that the BBT is a game-like, 3D, interactive task, the BBT could be used to examine the biological and/or environmental factors that affect the early development of visuospatial abilities.
MeSH term(s)	Activities of Daily Living ; Adolescent ; Child ; Child, Preschool ; Female ; Humans ; Male ; Spatial Navigation
Language	English
Publishing date	2021-07-01
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	4107-5
ISSN	1098-2302 ; 0012-1630
ISSN (online)	1098-2302
ISSN	0012-1630
DOI	10.1002/dev.22155
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