Tactile enumeration of small quantities using one hand

Cohen, Zahira Z.; Naparstek, Sharon; Henik, Avishai

doi:10.1016/j.actpsy.2014.03.011

Cited by 21 publications

(34 citation statements)

References 40 publications

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“…(2006) showed subitizing for one, two, or three fingers, while using a setup in which rods actively stimulated the fingertips by shooting up against the finger pads. A similar pattern was suggested in a recent study that used vibrators for stimulation (Cohen et al., 2014; although they did not measure numerosities outside the subitizing range). Subitizing was also found in a study where participants placed some of their fingers on surfaces while other fingers were suspended in the air.…”

Section: Introductionsupporting

confidence: 78%

“…Both subitizing and perceptual grouping have recently been demonstrated in the haptic modality. Haptic subitizing has been shown when participants had to report the number of stimulated fingers (Cohen, Naparstek, & Henik, 2014; Plaisier & Smeets, 2011b; Riggs et al., 2006), but also when the number of objects (such as small spheres) grasped in the hand had to be reported (Plaisier, Tiest, & Kappers, 2009). A direct comparison of visual enumeration of dot patterns to haptic enumeration of spheres grasped in the hand showed striking similarities in behavior, and the authors suggested that similar processes underlie visual and haptic numerosity judgment (Plaisier, Tiest, & Kappers, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Perceptual Grouping Affects Haptic Enumeration Over the Fingers

Overvliet¹,

Plaisier²

2015

Perception

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Spatial arrangement is known to influence enumeration times in vision. In haptic enumeration, it has been shown that dividing the total number of items over the two hands can speed up enumeration. Here we investigated how spatial arrangement of items and non-items presented to the individual fingers impacts enumeration times. More specifically, we tested whether grouping by proximity facilitates haptic serial enumeration (counting). Participants were asked to report the number of tangible items, amongst non-items, presented to the finger pads of both hands. In the first experiment, we divided the tangible items in one, two, or three groups that were defined by proximity (i.e., one nonitem in between two groups) and found that number of groups and not number of items were the critical factor in enumeration times. In a second experiment, we found that this grouping even takes place when groups extend across fingers of both hands. These results suggest that grouping by proximity affects haptic serial enumeration and that this grouping takes place on a spatial level possibly in addition to the somatotopic level. Our results support the idea that grouping by proximity, a principle introduced in vision, also greatly affects haptic processing of spatial information.

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Section: Introductionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Perceptual Grouping Affects Haptic Enumeration Over the Fingers

Overvliet¹,

Plaisier²

2015

Perception

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“…Also, applying stimuli to neighboring fingers yielded more efficient responses (Cohen, Naparstek, & Henik, 2014). Cohen and colleagues suggested that these results support the pattern recognition theory, since the familiar finger counting patterns showed increased efficiency (Cohen et al, 2018;Cohen, Aisenberg, & Henik, 2016;Cohen et al, 2014) Active touch studies (i.e., enumeration with active fingers exploration of objects) using one hand (Plaisier, Tiest, & Kappers, 2009) found subitizing of three objects. Active touch using two hands showed that subitizing of 3 could co-occur in both hands, perceptually Bchunked,^generating a total subitizing range of 6 (Plaisier, Tiest, & Kappers, 2010).…”

Section: Subitizing In the Tactile Domainmentioning

confidence: 79%

“…For example, enumerating five tactilely presented stimuli using one hand or 10 using both hands is a recognized embodied finger-counting pattern. Moreover, we are more efficient in enumerating neighboring arrangements, as it is the way we usually count with our fingers (Cohen, Aisenberg, & Henik, 2016;Cohen et al, 2014;Rinaldi, Di Luca, Henik, & Girelli, 2016). Visual canonical arrangements facilitate enumeration since they are strongly associated with a quantity (Mandler & Shebo, 1982), and as was suggested by Repp (2007), commonly used rhythms may constitute recognized temporal patterns that affect auditory subitizing.…”

Section: Discussionmentioning

confidence: 99%

If it looks, sounds, or feels like subitizing, is it subitizing? A modulated definition of subitizing

2019

Self Cite

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Research in cognitive psychology has focused mainly on the visual modality as the input interface for mental processes. We suggest that integrating studies from different modalities can aid in resolving theoretical controversies. We demonstrate this in the case of subitizing. Subitizing, the quick and accurate enumeration of small quantities, has been studied since the 19th century. Nevertheless, to date, the underlying mechanism is still debated. Two mechanisms have been suggested: a domain-general mechanism-attention, and a domain-specific mechanism-pattern recognition. Here, we review pivotal studies in the visual, tactile, and auditory modalities. The accumulative findings shed light on the theoretical debate. Accordingly, we suggest that subitizing is a subprocess of counting that occurs in the presence of facilitating factors, such as attentional resources and familiar patterns.

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“…It was also mentioned in previous studies that the correct rate of tactile numerosity judgments decreased if the number tactile actuators on the body surface was increased [39,63] . Researchers also found a moderate increase in response time when the number of stimuli was up to four by using one hand [67] . Evidence also showed that the tactile subitizing range was up to 2 and the counting range was from 3 and on [68] .…”

Section: Discussionmentioning

confidence: 99%

Psychophysics of wearable haptic/tactile perception in a multisensory context

Lei

Zhang

Chen

et al. 2019

Virtual Reality & Intelligent Hardware

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Multisensory lab based in Peking University, has carried out basic studies in multisensory space and time processing, intersensory binding and haptic / tactile perception. We exploited a typical paradigm of multisensory illusion-temporal ventriloquist effect and applied it in a wide range of multisensory interactions (mainly focused on temporal processing). In this work, we summarized how the tactile stimuli were exploited to compose tactile cues and as tactile apparent motion to interface with other sensory stimuli (visual and auditory stimuli) to examine the underlying perceptual organization in a multisensory context. Moreover, we introduced two examples of wearable haptic/tactile perception in our lab, by using two customized tactile devices and discussed the potential applications in this field.

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Tactile enumeration of small quantities using one hand

Cited by 21 publications

References 40 publications

Perceptual Grouping Affects Haptic Enumeration Over the Fingers

Perceptual Grouping Affects Haptic Enumeration Over the Fingers

If it looks, sounds, or feels like subitizing, is it subitizing? A modulated definition of subitizing

Psychophysics of wearable haptic/tactile perception in a multisensory context

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