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

supposition was supported from the result of theses experiments.
5138.160 Establishment of the long-term spatial memory of rat with short consolidating training
model, Li Zhang, Wei Yu, Taizhen Han, Mali Jiang, Xi’an Jiaotong University, China
The Rat Morris water maze model was established with short consolidating training in order to
test the long-term memory. Experimental rats were divided into two groups: classical long training
(LT) group and short-consolidating training (ST) group. The rats of LT received 50 times of
training in 5 days including 10 training sessions, and the rats of ST received 50 times of training in
one day including 2 training sessions. The long-term memory was tested in the 7th day after the
training sessions. The results show that short consolidating training could establish long-term
spatial memory. The mechanisms are under further investigation.
5138.161 The foreground-background segmentation and the implicit learning of the background,
Woo Hyun Jung, Jin Sun Lee, Eun Jung Kim, Yonsei University, Korea, Republic Of
Two experiments were conducted to investigate the implicit learning of background stimuli in
visual search displays using the “contextual cueing” paradigm(Chun & Jiang, 1998). The result of
the first experiment showed that as increasing the similarity of feature between the background
and foreground, the background is more engraved on implicit memory. In the second experiment,
the effect of the difficulty of visual search on the implicit learning of background varied
depending on the feature similarity between foreground and background. These results imply that
(1) the foreground-background segmentation affects the implicit learning of background and (2)
implicit memory is strongly related to attention.
5138.162 The effect of early isolated stress on the visual discrimination learning and reversal
learning in rats, Feng Shao, Liang Li, Xiao Feng Geng, PeKing University, Beijing, China
Using rotating T-maze, the effect of early isolated stress on the visual discrimination learning in
rats was explored. Early isolated stress was preformed from weaning (21 days of age) to adulthood,
then rats were trained in normal and reversal visual discrimination task. Results showed that for
normal visual discrimination task, there was no significant difference between rats in control and
isolation group, for reversal learning, the number of trials of rats in isolation group was
significantly increased. It was suggested that early isolated stress had no effect on normal visual
discrimination learning, but disrupted the acquisition of reversal learning.
5138.163 The phonological similarity effect in visual and auditory lists with articulatory
suppression, Janet Larsen 1 , Alan Baddeley 2 , 1 John Carroll University, USA, 2 University of York,
UK
Articulatory suppression eliminates the phonological similarity effect in STM with visual but not
auditory presentation. While this supports the phonological loop component of working memory,
Jones has argued that the effect is limited to recency and is attributable to sensory memory, not
STM. We argue that his result stems from use of letter sequences beyond span, leading to
abandonment of phonological coding. Using lists of six similar or dissimilar consonants presented
either visually or auditorily while participants engaged in articulatory suppression, we found a
similarity effect throughout the list for auditory but not visual presentation, supporting the
phonological loop model.
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