28th International Congress of Psychology August 8 ... - U-netSURF

encoding on both an implicit and an explicit test were compared. The results show no effect of
memory load in any of the word stem completion tasks, suggesting that priming does not rely on
working memory resources. By contrast, loading WM at encoding causes a significant disruptive
effect on the cued recall test for words when the load is verbal but not visual.
5085.2 An fMRI study of brain activity during short-term storage of learned and unlearned item
pairs, Steven Phillips, Kazuhisa Niki, National Institute of Advanced Industrial Science and
Technology (AIST), Japan
We investigate the changes in brain activity associated with storing (for short intervals) learned
and unlearned pairs of items. Subjects were scanned (fMRI) in four sessions spanning four months
before, during and after learning to recognize pairs of novel figures. Between-session contrasts of
learned pairs after minus before learning, and within-session contrasts of learned minus unlearned
pairs revealed superior and middle temporal gyral activity. Contrasting unlearned minus learned
pairs revealed activity in frontal and parietal lobes. These results suggest, "chunking" (learned
representations for complex stimuli) in the temporal lobe releases short-term memory resources in
the fronto-parietal lobes.
5085.3 Binding in Visual-spatial Working Memory, Song Yan, Institute of Psychology,
University of Goettingen, Germany
Neuropsychological research has provided evidence that there is separate processing of object and
spatial information by anatomically distinct subsystems. A change-detection paradigm with simple
shapes at different locations was used to investigate the binding of visual and spatial information
in working memory. The same-different judgments could be based on either one feature ‘location
or identity’ or both features including binding information. The results indicate that spatial
information is automatically involved in perceptual object recognition, whereas maintaining
binding of objects with their locations in an allocentric coordinate system in working memory
requires additional resources, perhaps at the expense of feature capacity.
5085.4 The role of central executive and slavery systems in the working memory updating task,
Zhenzhu Yue 1 , Ming Zhang 2 , Xiaolin Zhou 1 , 1 Department of Psychology, Peking University,
China, 2 Department of Psychology, Northeast Normal University, Changchun, China
This study examined the role of Central executive (CE) and slave systems using verbal and
visuo-spatial WM updating tasks, by changing the number of items updated simultaneously to
manipulate the load on CE. The results validated the efficiency of the paradigm and suggested that
CE played an important role in the updating component of verbal WM while the phonological
loop was responsible for the serial recall component. In spatial WM the visuo-spatial sketchpad
and CE together dealt with the updating component, and the visuo-spatial sketchpad took charge
of the serial recall component by itself.
5086 ORAL
Cognition
Chair: Elias Mpofu, USA
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