Impact Factor 2.089

The world's most-cited Multidisciplinary Psychology journal

General Commentary ARTICLE

Front. Psychol., 28 July 2016 | https://doi.org/10.3389/fpsyg.2016.01129

Commentary: Hand and Grasp Selection in a Preferential Reaching Task: The Effects of Object Location, Orientation, and Task Intention

  • 1Social and Cognitive Neuroscience Laboratory, Department of Psychology, Sapienza University of Rome, Rome, Italy
  • 2Istituto di Ricovero e Cura a Carattere Scientifico, Fondazione Santa Lucia, Rome, Italy

A commentary on
Hand and Grasp Selection in a Preferential Reaching Task: The Effects of Object Location, Orientation, and Task Intention

by Scharoun, S. M., Scanlan, K. A., and Bryden, P. J. (2016). Front. Psychol. 7:360. doi: 10.3389/fpsyg.2016.00360

Reach-to-grasp actions are the outcomes of several voluntary sub-movements (Jeannerod, 1981, 1984; Paulignan et al., 1997) dependent on the object intrinsic position and shape characteristics (Fattori et al., 2009). The behaviors implemented in order to achieve the proximal goal (i.e., grasping) are further modulated by the action one wants to perform once the object has been grasped (distal goal; Cohen and Rosenbaum, 2004; Cattaneo et al., 2007). These findings suggest that the reason why an object is grasped has an effect on initial prehension kinematics (i.e., “end-goal effect”).

Grasping an object often serve the purpose of interpersonal interactions, which are defined by matching behavioral adaptation between subjects (Baldwin, 1992) and, more importantly, joint actions, where the presence of a common goal bounds individuals' behaviors (Sebanz et al., 2006). In these interactive scenarios, the intentions one attributes to his partner are crucial in shaping his own hand-preference for grasping objects as well as the kinematics of his movements. For these different features to be integrated in one movement, reach-to-grasp has been used as a paradigmatic example of the interface between motor behavior and cognition.

Recently, Scharoun et al. (2016) aimed at studying hand-preference in an ecological set-up including individual and so-called “joint actions” conditions. Here, we argue that adding a social aspect to an individual condition does not capture the essence of joint actions. The authors asked subjects to reach-and-grasp a mug in order to perform four different actions without giving them any instructions on how to perform their grasping. Such paradigms contribute to the field of motor control by clarifying grasping hand-preference embedded in the strategy of grasping. Furthermore, Scharoun and her colleagues proposed four different experimental conditions to test the role of the distal goal on hand-preferences: (1) pick-up (unimanual, independent); (2) pick-up and pour (bimanual, independent); (3) pick-up and pass (unimanual, joint action); and (4) pick-up, pour, and pass (bimanual, joint action). The behavioral results of the study show that the first two conditions offer clear support for the dominant hand preference hypothesis during unimanual actions. The study needs to be praised for showing all the aforementioned effects in a realistic paradigm.

However, we think that calling “joint actions” their third and fourth conditions is misleading and represent a misuse of the “joint action” terminology and its actual conceptualization. Indeed, to their “independent” condition, Scharoun and colleagues chose to oppose the term “joint action” when participants had to pass the mug to a confederate who was simply sitting in front of them.

We contend that joint actions are characterized by specific features and need to be called into play with caution. One crucial feature of joint actions is that they are activities involving two or more individuals who need to voluntarily coordinate their actions in time and space in order to achieve a desired change in the environment (Sebanz et al., 2006). In Scharoun's study, we argue that their set-up is not in phase with this definition, making their “joint action” condition contestable and more similar to a “social condition.” We do not deny the interest of studying the way in which objects are grasped before passing them to another person (Becchio et al., 2008b) which is clearly inherent to social collaboration.

By choosing a passive experimenter as a confederate, Scharoun and colleagues' set-up fails to measure the dynamic encounters that adjust behavioral and cognitive processes of agents involved in joint actions (Knoblich and Sebanz, 2006; Sebanz et al., 2006; Vesper et al., 2010; Di Paolo and De Jaegher, 2012; Dolk et al., 2014; Sacheli et al., 2015b). Even though the “pick up and pass” and the “pick-up, pour and pass” conditions show a different hand-preference pattern compared to the individual ones, these modulations may be a consequence of the confederate mere presence (i.e., social affordance; Becchio et al., 2008b; Ferri et al., 2011). Therefore, by lacking a condition directly testing the role of a social request (Ferri et al., 2011) to identify the direct influence of the possible interaction with a confederate, these modulations should not be interpreted as a result of a joint action.

Since humans and primates share grasping behaviors, a great number of monkeys and humans studies have been using reach-to-grasp actions which gained us a good understanding of grasping physiology (Castiello, 2005). For these reasons, grasping has also been used in “social contexts” (Becchio et al., 2008a, 2012; Rozzi and Coudé, 2015) during interpersonal interactions or, crucially, adopting joint actions paradigms. Recording kinematics and/or brain dynamics during these interactions improved the knowledge of social neurosciences in non-verbal communication, coordination, competition, and leader–follower situations (Rizzolatti and Fadiga, 1998; Ménoret et al., 2014; Candidi et al., 2015a; Sacheli et al., 2015a,b).

After years of philosophical and scientific debates, social neurosciences need to now focus on “online,” dynamically mutual, motor interactions (Schilbach et al., 2013), where “individualism” steps aside for “interactionism” to rise (Gallotti and Frith, 2013). This suggests creating experimental paradigms that allow partners' reciprocal and bidirectional adjustments during the interaction (Sacheli et al., 2015a). Such online paradigms allow closed-loop processes (Hari and Kujala, 2009; Tognoli and Kelso, 2015) that bound together individuals and constrain their individual behavior (Candidi et al., 2015b). Experimentally speaking, this requires bidirectional set-ups, where contributors' motor action and perception allow a shared representation of the action between all participants (Sebanz et al., 2003, 2005, 2007).

In conclusion, we agree with Scharoun and her colleagues' claims on the importance of creating ecological set-ups. But in the field of joint actions these should be developed with the constant constraint of involving reciprocal and bidirectional adaptation between two agents. Thus, we argue that Scharoun and colleagues' “non”-independent condition was not a joint action per se.

In order to bring the field of joint action to the forefront of social neurosciences and build credibility concerning the related literature, one should beware of their essential features and use the joint action terminology prudently and parsimoniously. This is a fundamental condition to attain greater continuity and coherence in our field.

Authors Contributions

QM and MC have made substantial, direct, and intellectual contribution to the work, and approved it for publication.

Conflict of Interest Statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

References

Baldwin, M. W. (1992). Relational schemas and the processing of social information. Psychol. Bull. 112, 461–484. doi: 10.1037/0033-2909.112.3.461

CrossRef Full Text | Google Scholar

Becchio, C., Manera, V., Sartori, L., Cavallo, A., and Castiello, U. (2012). Grasping intentions: from thought experiments to empirical evidence. Front. Hum. Neurosci. 6:117. doi: 10.3389/fnhum.2012.00117

PubMed Abstract | CrossRef Full Text

Becchio, C., Sartori, L., Bulgheroni, M., and Castiello, U. (2008a). The case of Dr. Jekyll and Mr. Hyde: a kinematic study on social intention. Conscious. Cogn. 17, 557–564. doi: 10.1016/j.concog.2007.03.003

PubMed Abstract | CrossRef Full Text | Google Scholar

Becchio, C., Sartori, L., Bulgheroni, M., and Castiello, U. (2008b). Both your intention and mine are reflected in the kinematics of my reach-to-grasp movement. Cognition 106, 894–912. doi: 10.1016/j.cognition.2007.05.004

PubMed Abstract | CrossRef Full Text | Google Scholar

Candidi, M., Curioni, A., Donnarumma, F., Sacheli, L. M., and Pezzulo, G. (2015a). Interactional leader-follower sensorimotor communication strategies during repetitive joint actions. J. R. Soc. Interface 12:20150644. doi: 10.1098/rsif.2015.0644

PubMed Abstract | CrossRef Full Text | Google Scholar

Candidi, M., Sacheli, L. M., and Aglioti, S. M. (2015b). From muscles synergies and individual goals to interpersonal synergies and shared goals: mirror neurons and interpersonal action hierarchies: comment on “Grasping synergies: a motor-control approach to the mirror neuron mechanism” by D'Ausilio et al. Phys. Life Rev. 12, 126–128. doi: 10.1016/j.plrev.2015.01.023

PubMed Abstract | CrossRef Full Text | Google Scholar

Castiello, U. (2005). The neuroscience of grasping. Nat. Rev. Neurosci. 6, 726–736. doi: 10.1038/nrn1744

PubMed Abstract | CrossRef Full Text | Google Scholar

Cattaneo, L., Fabbri-Destro, M., Boria, S., Pieraccini, C., Monti, A., Cossu, G., et al. (2007). Impairment of actions chains in autism and its possible role in intention understanding. Proc. Natl. Acad. Sci. U.S.A. 104, 17825–17830. doi: 10.1073/pnas.0706273104

PubMed Abstract | CrossRef Full Text | Google Scholar

Cohen, R. G., and Rosenbaum, D. A. (2004). Where grasps are made reveals how grasps are planned: generation and recall of motor plans. Exp. Brain Res. 157, 486–495. doi: 10.1007/s00221-004-1862-9

PubMed Abstract | CrossRef Full Text | Google Scholar

Di Paolo, E. A., and De Jaegher, H. (2012). The interactive brain hypothesis. Front. Hum. Neurosci. 6:163. doi: 10.3389/fnhum.2012.00163

PubMed Abstract | CrossRef Full Text

Dolk, T., Hommel, B., Colzato, L. S., Schütz-Bosbach, S., Prinz, W., and Liepelt, R. (2014). The joint Simon effect: a review and theoretical integration. Front. Psychol. 5:974. doi: 10.3389/fpsyg.2014.00974

PubMed Abstract | CrossRef Full Text | Google Scholar

Fattori, P., Breveglieri, R., Marzocchi, N., Filippini, D., Bosco, A., and Galletti, C. (2009). Hand orientation during reach-to-grasp movements modulates neuronal activity in the medial posterior parietal area V6A. J. Neurosci. 29, 1928–1936. doi: 10.1523/JNEUROSCI.4998-08.2009

PubMed Abstract | CrossRef Full Text | Google Scholar

Ferri, F., Campione, G. C., Dalla Volta, R., Gianelli, C., and Gentilucci, M. (2011). Social requests and social affordances: how they affect the kinematics of motor sequences during interactions between conspecifics. PLoS ONE 6:e15855. doi: 10.1371/journal.pone.0015855

PubMed Abstract | CrossRef Full Text | Google Scholar

Gallotti, M., and Frith, C. D. (2013). Social cognition in the we-mode. Trends Cogn. Sci. 17, 160–165. doi: 10.1016/j.tics.2013.02.002

PubMed Abstract | CrossRef Full Text | Google Scholar

Hari, R., and Kujala, M. V. (2009). Brain basis of human social interaction: from concepts to brain imaging. Physiol. Rev. 89, 453–479. doi: 10.1152/physrev.00041.2007

PubMed Abstract | CrossRef Full Text | Google Scholar

Jeannerod, M. (1981). “Intersegmental coordination during reaching at natural visual objects,” in Attention and Performance, Vol. IX, eds J. Long and A. Baddeley (Hillsdale, NJ: Erlbaum), 153–168.

Jeannerod, M. (1984). The timing of natural prehension movements. J. Mot. Behav. 16, 235–254. doi: 10.1080/00222895.1984.10735319

PubMed Abstract | CrossRef Full Text | Google Scholar

Knoblich, G., and Sebanz, N. (2006). The social nature of perception and action. Curr. Dir. Psychol. Sci. 15, 99–104. doi: 10.1111/j.0963-7214.2006.00415.x

CrossRef Full Text | Google Scholar

Ménoret, M., Varnet, L., Fargier, R., Cheylus, A., Curie, A., des Portes, V., et al. (2014). Neural correlates of non-verbal social interactions: a Dual-EEG study. Neuropsychologia 55, 85–97. doi: 10.1016/j.neuropsychologia.2013.10.001

PubMed Abstract | CrossRef Full Text | Google Scholar

Paulignan, Y., Frak, V. G., Toni, I., and Jeannerod, M. (1997). Influence of object position and size on human prehension movements. Exp. Brain Res. 114, 226–234. doi: 10.1007/PL00005631

PubMed Abstract | CrossRef Full Text | Google Scholar

Rizzolatti, G., and Fadiga, L. (1998). Grasping objects and grasping action meanings: the dual role of monkey rostroventral premotor cortex (area F5). Novartis Found Symp. 218, 81–95; discussion 95–103.

PubMed Abstract | Google Scholar

Rozzi, S., and Coudé, G. (2015). Grasping actions and social interaction: neural bases and anatomical circuitry in the monkey. Front. Psychol. 6:973. doi: 10.3389/fpsyg.2015.00973

PubMed Abstract | CrossRef Full Text | Google Scholar

Sacheli, L. M., Aglioti, S. M., and Candidi, M. (2015b). Social cues to joint actions: the role of shared goals. Front. Psychol. 6:1034. doi: 10.3389/fpsyg.2015.01034

PubMed Abstract | CrossRef Full Text | Google Scholar

Sacheli, L. M., Candidi, M., Era, V., and Aglioti, S. M. (2015a). Causative role of left aIPS in coding shared goals during human–avatar complementary joint actions. Nat. Commun. 6:7544. doi: 10.1038/ncomms8544

PubMed Abstract | CrossRef Full Text | Google Scholar

Scharoun, S. M., Scanlan, K. A., and Bryden, P. J. (2016). Hand and grasp selection in a preferential reaching task: the effects of object location, orientation, and task intention. Front. Psychol. 7:360. doi: 10.3389/fpsyg.2016.00360

PubMed Abstract | CrossRef Full Text | Google Scholar

Schilbach, L., Timmermans, B., Reddy, V., Costall, A., Bente, G., Schlicht, T., et al. (2013). Toward a second-person neuroscience. Behav. Brain Sci. 36, 393–414. doi: 10.1017/S0140525X12000660

PubMed Abstract | CrossRef Full Text | Google Scholar

Sebanz, N., Bekkering, H., and Knoblich, G. (2006). Joint action: bodies and minds moving together. Trends Cogn. Sci. 10, 70–76. doi: 10.1016/j.tics.2005.12.009

PubMed Abstract | CrossRef Full Text | Google Scholar

Sebanz, N., Knoblich, G., and Prinz, W. (2003). Representing others actions: just like one's own? Cognition 88, B11–B21. doi: 10.1016/S0010-0277(03)00043-X

PubMed Abstract | CrossRef Full Text | Google Scholar

Sebanz, N., Knoblich, G., and Prinz, W. (2005). How two share a task: corepresenting stimulus-response mappings. J. Exp. Psychol. Hum. Percept. Perform. 31, 1234–1246. doi: 10.1037/0096-1523.31.6.1234

PubMed Abstract | CrossRef Full Text | Google Scholar

Sebanz, N., Rebbechi, D., Knoblich, G., Prinz, W., and Frith, C. D. (2007). Is it really my turn? An event-related fMRI study of task sharing. Soc. Neurosci. 2, 81–95. doi: 10.1080/17470910701237989

PubMed Abstract | CrossRef Full Text | Google Scholar

Tognoli, E., and Kelso, J. A. S. (2015). The coordination dynamics of social neuromarkers. Front. Hum. Neurosci. 9:563. doi: 10.3389/fnhum.2015.00563

PubMed Abstract | CrossRef Full Text | Google Scholar

Vesper, C., Butterfill, S., Knoblich, G., and Sebanz, N. (2010). A minimal architecture for joint action. Neural Netw. 23, 998–1003. doi: 10.1016/cj.neunet.2010.06.002

PubMed Abstract | CrossRef Full Text | Google Scholar

Keywords: joint-action, grasping kinematics, social grasping, task intention, reach-to-grasp

Citation: Moreau Q and Candidi M (2016) Commentary: Hand and Grasp Selection in a Preferential Reaching Task: The Effects of Object Location, Orientation, and Task Intention. Front. Psychol. 7:1129. doi: 10.3389/fpsyg.2016.01129

Received: 06 May 2016; Accepted: 14 July 2016;
Published: 28 July 2016.

Edited by:

Yann Coello, University of Lille Nord de France, France

Reviewed by:

Aymar De Rugy, Centre National de la Recherche Scientifique, France

Copyright © 2016 Moreau and Candidi. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: Quentin Moreau, quentin.moreau@uniroma1.it
Matteo Candidi, matteo.candidi@uniroma1.it