Editorial: Bridging the Theories of Affordances and Limb Apraxia

Pellicano, Antonello; Borghi, Anna M.; Binkofski, Ferdinand

doi:10.3389/fnhum.2017.00148

Cited by 11 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Not significantly increasing effect functions were produced across the RTs distributions. These results add support to the findings of Pellicano et al ( 2017a , b ; 2018a ; 2018b ) on the spatial coding of visual objects based on the side which results to be more salient. More in general, this result is also consistent with studies showing that when variations in the standard Simon task are introduced, a constant (or increasing) correspondence effect is usually found, which is thought to reflect a time-consuming coding of object-inherent spatial codes (see Pellicano et al 2009 ).…”

Section: Resultssupporting

confidence: 89%

“…However, the same effect was expected in the graspable instruction group: notwithstanding the instructions to focus on the graspable side and rely the performance on its location, it would be the most salient side that still drives the spatial coding of the objects and biases performance, accordingly. On the other hand, if instructions to rely on the graspable portion instantiated grasping affordances, as opposite to what observed when the graspable portion was task irrelevant (Pellicano et al 2017a , b ), faster performance would be observed when the responding hand was aligned to the graspable side of the creamers, than when it was not. Using G*Power (Version 3.1.9.2; Faul et al 2007 ), we estimated that, given an α level of 0.05, with a sample of 12 participants for each instruction group, we would have 95% power to detect an effect size of 0.68 (based on Pellicano et al 2017b —Experiment 1A).…”

Section: Methodsmentioning

confidence: 82%

“…Accordingly, the perception of an object tool, beyond the extraction of its perceptual features such as color, shape, size, and location orientation, also activates appropriate grasping actions which are consistent with its identity and its canonical use (e.g., Bub and Masson 2010;Goslin et al 2012;Pellicano et al 2010a). Indeed, different from the previously described account, activated actions are limb specific: they will involve the left or the right hand depending on the left-or rightward orientation of the object handle (variable affordances; see Pellicano et al 2011;Pellicano et al 2017a). As a result, responses to a graspable object become faster and more accurate when the responding hand is aligned with the left-right orientation of its graspable part (i.e., the handle), compared to when it is not.…”

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

The prominent role of perceptual salience in object discrimination: overt discrimination of graspable side does not activate grasping affordances

Pellicano

Binkofski

2020

Psychological Research

Self Cite

View full text Add to dashboard Cite

Responses to object stimuli are often faster when jutting handles are aligned with responding hands, than when they are not: handle-to-hand correspondence effects. According to a location coding account, locations of visually salient jutting parts determine the spatial coding of objects. This asymmetry then facilitates same-sided responses compared to responses on the opposite side. Alternatively, this effect has been attributed to grasping actions of the left or the right hand afforded by the handle orientation and independent of its salience (affordance activation account). Our experiments were designed to disentangle the effects of pure salience from those of affordance activations. We selected pictures of tools with one salient and non-graspable side, and one graspable and non-salient side (non-jutting handle). Two experiments were run. Each experiment had two groups of participants: one group discriminated the location of the salient side of the object stimuli; the other group discriminated the location of the graspable side of them. In Experiment 1, responses were left and right button presses; in Experiment 2, they were left and right button presses plus reach-and-grasp actions. When visual salience was removed from graspable sides, no correspondence effect was observed between their orientation and the responding hands in both the experiments. Conversely, when salience depended on non-graspable portions, a correspondence effect was produced between their orientation and the responding hand. Overt attention to graspable sides did not potentiate any grasping affordance even when participants executed grasping responses in addition to button presses. Results support the location coding account: performance was influenced by the spatial coding of visually salient properties of objects.

show abstract

Section: Resultssupporting

confidence: 89%

Section: Methodsmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

The prominent role of perceptual salience in object discrimination: overt discrimination of graspable side does not activate grasping affordances

Pellicano

Binkofski

2020

Psychological Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…This effect was employed to investigate the affordance activation hypothesis, according to which the perception of an object tool, beyond the extraction of mere perceptual features such as color, shape, size, and location orientation also activate actions which are consistent with its identity and its canonical use (e.g., Bub & Masson, 2010;Goslin, Dixon, Fischer, Cangelosi, & Ellis, 2012;Masson, Bub, & Breuer, 2011;Pellicano, Iani, Borghi, Rubichi, & Nicoletti, 2010b). According to this view, a perceived object activates appropriate grasping gestures whenever its identity and its functional meaning are recognized by the perceiver: whether these gestures will involve the left or the right hand will depend on the left-or rightward orientations of the object handle (variable affordances; see Borghi & Riggio, 2015;Pellicano, Thill, Ziemke, & Binkofski, 2011, see also Pellicano, Borghi, & Binkofski, 2017a). As a result, responses to a graspable object become faster and more accurate when the responding hand is aligned with its left-or rightward jutting handle, compared to when it is not.…”

Section: Introductionmentioning

confidence: 99%

The unimanual handle-to-hand correspondence effect: evidence for a location coding account

Pellicano

Lugli

Binkofski

et al. 2018

Psychological Research

Self Cite

View full text Add to dashboard Cite

The handle-to-hand correspondence effect refers to faster and more accurate responses when the responding hand is aligned with the graspable part of an object tool, compared to when they lay on opposite sides. We performed four behavioral experiments to investigate whether this effect depends on the activation of grasping affordances (affordance activation account) or is to be traced back to a Simon effect, resulting from the spatial coding of stimuli and responses and from their dimensional overlap (location coding account). We manipulated the availability of a response alternative by requiring participants to perform either a unimanual go/no-go task (absence of a response alternative) or a joint go/no-go task (available response alternative) and the type of response required (button-press or grasping response). We found no handle-to-hand correspondence effect in the individual go/no-go task either when a button-press (Experiment 1A) or a grasping (Experiment 2A) response was required, whereas a significant effect emerged in the joint go/no-go task, irrespective of response modality (Experiments1B and 2B). These results do not support the idea that complex motor affordances are activated for meaningful objects, but are rather consistent with the more parsimonious location coding account.

show abstract

“… 1 But see Pellicano et al (2017) for attempts to elucidate apraxia deficits in terms of affordance mechanisms. See also Sevos et al (2013) , who demonstrated that patients with schizophrenia performed poorly in an affordance detection task; and Rounds and Humphreys et al (2000) , who attempted to rationalize limb apraxia arising from an abnormal sensitivity to competition in the presence of multiple affordances.…”

mentioning

confidence: 99%

Disturbance of Ecological Self and Impairment of Affordance Perception

Kim

Effken

2022

Front. Psychol.

View full text Add to dashboard Cite

Affordance, a radical concept James Gibson introduced in the 1970s, remains controversial today. Defined as environmental properties taken with reference to an animal’s anatomy and action capabilities, affordances are opportunities for action the environment offers. By perceiving affordances, organisms hold meaningful relationships with their surroundings. Affordance is not just a theoretical concept but, as the embodiment of meanings and values, has serious psychological implications. We contend that the lack of these meanings and values underlies the irrational behavior seen in patients with self disorders such as schizophrenia. We reason that it is by perceiving affordances that individuals keep in touch with their surroundings and stay mentally healthy. Using contrapositive reasoning, the reverse could also be true. That is, when individuals experience difficulty maintaining meaningful relations with their surroundings and suffer from mental health problems, we might anticipate that their affordance detection systems are impaired. In two studies conducted in our laboratory, patients with schizophrenia and Alzheimer’s disease were shown to have impaired capacity to perceive affordances, a result qualifying as contra-positive evidence corroborating the affordance concept. In addition, our results provide support for accepting contra-positive evidence as a complementary tool to positive evidence for empirically validating concepts such as affordance and meaning.

show abstract

Editorial: Bridging the Theories of Affordances and Limb Apraxia

Cited by 11 publications

References 7 publications

The prominent role of perceptual salience in object discrimination: overt discrimination of graspable side does not activate grasping affordances

The prominent role of perceptual salience in object discrimination: overt discrimination of graspable side does not activate grasping affordances

The unimanual handle-to-hand correspondence effect: evidence for a location coding account

Disturbance of Ecological Self and Impairment of Affordance Perception

Contact Info

Product

Resources

About