Representational Momentum Beyond Internalized Physics : Embodied Mechanisms of Anticipation Cause Errors in Visual Short-Term Memory  

Oleh:

Kerzel, Dirk

Jenis: Article from Journal - e-Journal
Dalam koleksi: Current Directions in Psychological Science vol. 14 no. 04 (Aug. 2005), page 180-184.
Topik: representational momentum; visual short term memory; naive physics; mislocalization; sensorimotor integration
Fulltext: 03. Representational Momentum Beyond Internalized Physics - Embodied Mechanisms of Anticipation Cause Errors....pdf (107.92KB)

Isi artikel

Prediction of future motion is necessary in order to successfully deal with moving objects. Implicit measures have been used to evaluate the sources of information used in this task. For instance, observers may be asked to localize the final position of a moving target. Judgments have been found to be displaced in the direction of motion (forward displacement), suggesting that observers have internalized a mental analogue of physical momentum. However, more recent studies have shown that forward displacement may not be caused by cognitive mechanisms alone. Rather, predictive mechanisms at the perceptual and motor levels may contribute to the forward error. Supporting the notion that mechanisms of anticipation may be embodied, the forward error was found to depend on the execution of eye and pointing movements. Also, forward displacement depended on the motion type that was presented (smooth vs. jerky or implied), which suggests that attention moves to the next expected target position to facilitate responses to this position.

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