Three experiments study the impact of symmetry on a sequential block tapping immediate memory task in human subjects. Experiment 1 shows an advantage from vertical symmetry over non-symmetrical sequences, while finding no effect of horizontal or diagonal symmetry. Experiment 2 tests the possible role of verbal labeling by means of a secondary task that prevents this by articulatory suppression. No evidence of verbalization was observed. A third study examines the effects of a concurrent executive load, finding an overall impairment, that did not differ between symmetrical and asymmetric patterns, suggesting that the effect of symmetry reflects automatic rather than executive processes. Implications for the episodic buffer component of working memory are discussed. (C) 2005 Published by Elsevier Ltd on behalf of IBRO.
Symmetry and binding in visuo-spatial working memory / ROSSI ARNAUD, Clelia Matilde; Pieroni, Laura; A., Baddeley. - In: NEUROSCIENCE. - ISSN 0306-4522. - 139:1(2006), pp. 393-400. [10.1016/j.neuroscience.2005.10.048]
Symmetry and binding in visuo-spatial working memory
ROSSI ARNAUD, Clelia Matilde;PIERONI, LAURA;
2006
Abstract
Three experiments study the impact of symmetry on a sequential block tapping immediate memory task in human subjects. Experiment 1 shows an advantage from vertical symmetry over non-symmetrical sequences, while finding no effect of horizontal or diagonal symmetry. Experiment 2 tests the possible role of verbal labeling by means of a secondary task that prevents this by articulatory suppression. No evidence of verbalization was observed. A third study examines the effects of a concurrent executive load, finding an overall impairment, that did not differ between symmetrical and asymmetric patterns, suggesting that the effect of symmetry reflects automatic rather than executive processes. Implications for the episodic buffer component of working memory are discussed. (C) 2005 Published by Elsevier Ltd on behalf of IBRO.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
