Which Mechanical Invariants Are Associated With the Perception of Length and Heaviness of a Nonvisible Handheld Rod? Testing the Inertia Tensor Hypothesis.

Kingma, Idsart; Langenberg, Rolf van de; Beek, Peter J.

doi:10.1037/0096-1523.30.2.346

Cited by 69 publications

(115 citation statements)

References 28 publications

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“…This is in keeping with recent experimental findings in the ecological study of perception and action. Indeed, as mentioned above, recent studies have found that the detection of the same pattern in the array can result in the perception of different environmental properties at different moments in time (e.g., Kingma et al, 2004). So what a pattern in the array informs about is co-determined by the perceptual process it is participating in.…”

Section: Applying Oyama's Conception Of Information To Perception-actionmentioning

confidence: 95%

“…One illustrative series of experiments was conducted by van de Langenberg, Kingma, and Beek (2006;Kingma, van de Langenberg, & Beek, 2004) who examined the use of mechanical invariants in dynamic touch. Dynamic touch refers to the capacity to haptically perceive object properties (e.g., weight, length, form) by simply holding the object in the hand or wielding it (see e.g., Turvey & Carello, 1995).…”

Section: Empirical Studies Of Perception Action Learning and Develmentioning

confidence: 99%

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Towards a new ecological conception of perceptual information: Lessons from a developmental systems perspective

Withagen¹,

Kamp²

2010

Human Movement Science

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Over the last two decades or so, empirical studies of perception, action, learning, and development have revealed that participants vary in what variable they detect and use and often rely on nonspecifying variables. This casts doubt on the Gibsonian conception of information as specification. It is argued that a recent ecological conception of information has solved important problems, but falls short in explaining what determines the object of perception. Drawing on recent work on developmental systems, we sketch the outlines of an alternative conception of perceptual information.It is argued that perceptual information does not reside in the ambient arrays; rather, perceptual information is a relational property of patterns in the array and perceptual processes. What a pattern in the ambient flow informs about depends on the perceiver who uses it. Here, we explore the implications of this alternative conception of information for the ecological approach to perception and action. The concept of information is a strongly debated notion in the study of perception and action. Indeed, among the issues that separate contemporary approaches to perception and action is the idea of what information is and where it resides. Proponents of indirect theories of perception have asserted that the information involved in perception exists both in the environment and the perceiver. Roughly speaking, this theory holds that the stimulus information that impinges on the senses is impoverished and needs to be enriched (e.g., Fodor & Pylyshyn, 1981;Neisser, 1967;Ullman, 1980). Thus, information residing in the animal enriches the impoverished stimulus information that the senses receive from the environment. Advocates of the theory of direct perception, by contrast, have claimed that all the information that is needed for perception is "out there" in the environment. J. J. Gibson (1966Gibson ( , 1979Gibson ( /1986, the founder of the ecological theory, asserted that the ambient energy arrays contain information that is rich and sufficient for perception. Because information in the arrays is specific to environmental properties, enrichment processes can be dispensed with. Perception is simply the extraction of specifying information that resides in the ambient array.Since its inception in the 1960s and 1970s, J. J. Gibson's ecological theory of perception and action has inspired many researchers, giving rise to a fruitful experimental program, the results of which are steadily accumulating (e

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Section: Applying Oyama's Conception Of Information To Perception-actionmentioning

confidence: 95%

Section: Empirical Studies Of Perception Action Learning and Develmentioning

confidence: 99%

Towards a new ecological conception of perceptual information: Lessons from a developmental systems perspective

Withagen¹,

Kamp²

2010

Human Movement Science

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“…The rationale for using homogeneous rods was as follows: To induce recalibration, one must provide feedback based on the variable that the participants exploit; feedback based on some other variable can induce a change in the exploited variable (Withagen & Michaels, 2005). Additionally, there is a debate in the dynamic touch literature regarding what variable is exploited to perceive length (e.g., Kingma, van de Langenberg, & Beek, 2004) and sweet spot . By using homogeneous rods of the same material and the same diameter, we can circumvent this problem of what variable to feed back on.…”

Section: Apparatus and Materialsmentioning

confidence: 99%

Transfer of Calibration Between Length and Sweet-Spot Perception by Dynamic Touch

Withagen

Michaels

2007

Ecological Psychology

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“…This resistance is determined by the first eigenvalue of the inertia tensor (I 1 ). The smallest resistance, determined by the third eigenvalue of the inertia tensor (I 3 ), is associated with rotating a rod around its longitudinal axis (for a more thorough treatment of the inertia tensor, see, e.g., Kingma, van de Langenberg, & Beek, 2004;Turvey, 1996).…”

mentioning

confidence: 99%

Mechanical invariants are implicated in dynamic touch as a function of their salience in the stimulus flow.

Langenberg¹,

Kingma²,

Beek³

2006

Journal of Experimental Psychology: Human Perception and Perfor

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The authors investigated the mechanical basis of length perception through dynamic touch using specially designed rods in which the various moments of mass distribution (mass, static moment, and rotational inertia) were varied independently. In a series of 4 experiments, exploration style and rod orientation were manipulated such that the relative salience of moments of mass distribution varied markedly. Results showed that perceived length was based on the most salient moments. The authors concluded that the notion of salience is crucial for understanding the implication of moments of mass distribution in length perception and that it should play a pivotal role in developing an encompassing theory of dynamic touch.

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Which Mechanical Invariants Are Associated With the Perception of Length and Heaviness of a Nonvisible Handheld Rod? Testing the Inertia Tensor Hypothesis.

Cited by 69 publications

References 28 publications

Towards a new ecological conception of perceptual information: Lessons from a developmental systems perspective

Towards a new ecological conception of perceptual information: Lessons from a developmental systems perspective

Transfer of Calibration Between Length and Sweet-Spot Perception by Dynamic Touch

Mechanical invariants are implicated in dynamic touch as a function of their salience in the stimulus flow.

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