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Handedness in Animals and Plants
by
Silvia Guerra
Silvia Guerra *,
Umberto Castiello
Umberto Castiello
Umberto Castiello is a Full Professor of Cognitive Neuroscience in the Department of General the of [...]
Umberto Castiello is a Full Professor of Cognitive Neuroscience in the Department of General Psychology at the University of Padua. He worked for about sixteen years (1988-2004) abroad at various universities such as the University of Lyon, the University of Arizona, the University of Melbourne, and the University of London. He became a Full Professor at the University of Padua in 2004. He is a member of various scientific societies including the Beniamino Segre Center at the Accademia dei Lincei. He was awarded the Doctorate of Science by the University of Melbourne. His research activity is focused on the use of three-dimensional movement analysis and neuroimaging techniques for the study of the mechanisms linked to the organization of movement. Among his most important results is the demonstration that plants, even in the absence of a brain, can perceive and evaluate the physical characteristics of external elements to "plan" a functional movement to achieve a goal. This research opens a new vision for the study of cognitive abilities, approached from both an animal and plant perspective (neural and non-neural), which offers a more integrated view of the evolution of cognitive processes and the ecological interactions that contribute to creating them. His research has been funded by various international and national programs and foundations.
,
Bianca Bonato
Bianca Bonato and
Marco Dadda
Marco Dadda
Department of General Psychology (DPG), University of Padova, 35131 Padova, Italy
*
Author to whom correspondence should be addressed.
Submission received: 3 May 2024
/
Revised: 1 July 2024
/
Accepted: 4 July 2024
/
Published: 5 July 2024
Simple Summary
Animals and plants present asymmetric structures in nature. The most relevant motor behavioural manifestation of lateralisation is handedness, which is defined as the consistent use of one effector rather than the other in performing certain tasks. In animals, including human beings, handedness is associated with the presence of a nervous system. Researchers have recently challenged this idea by reporting that even organisms without a nervous system, such as plants, exhibit similarities with animals in terms of directional movement patterns (i.e., right-handed prevalence), opening up the possibility of a comparative study of handedness across taxa. Here, we advance a comparative approach to the study of handedness in plants by adopting the experimental paradigms already used to research laterality in various animal species.
Abstract
Structural and functional asymmetries are traceable in every form of life, and some lateralities are homologous. Functionally speaking, the division of labour between the two halves of the brain is a basic characteristic of the nervous system that arose even before the appearance of vertebrates. The most well-known expression of this specialisation in humans is hand dominance, also known as handedness. Even if hand/limb/paw dominance is far more commonly associated with the presence of a nervous system, it is also observed in its own form in aneural organisms, such as plants. To date, little is known regarding the possible functional significance of this dominance in plants, and many questions remain open (among them, whether it reflects a generalised behavioural asymmetry). Here, we propose a comparative approach to the study of handedness, including plants, by taking advantage of the experimental models and paradigms already used to study laterality in humans and various animal species. By taking this approach, we aim to enrich our knowledge of the concept of handedness across natural kingdoms.
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MDPI and ACS Style
Guerra, S.; Castiello, U.; Bonato, B.; Dadda, M.
Handedness in Animals and Plants. Biology 2024, 13, 502.
https://doi.org/10.3390/biology13070502
AMA Style
Guerra S, Castiello U, Bonato B, Dadda M.
Handedness in Animals and Plants. Biology. 2024; 13(7):502.
https://doi.org/10.3390/biology13070502
Chicago/Turabian Style
Guerra, Silvia, Umberto Castiello, Bianca Bonato, and Marco Dadda.
2024. "Handedness in Animals and Plants" Biology 13, no. 7: 502.
https://doi.org/10.3390/biology13070502
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