Information processing in short-term memory and event-related potentials

1989 ◽  
Vol 7 (2-4) ◽  
pp. 314-315
Author(s):  
Anne-Marie Metz ◽  
Torsten Wuenscher
Keyword(s):  
Information Processing ◽  
Short Term Memory ◽  
Event Related Potentials ◽  
Short Term ◽  
Term Memory ◽  
Related Potentials

scholarly journals Feature-based and object-based attention orientation during short-term memory maintenance

2015 ◽  
Vol 114 (6) ◽  
pp. 3036-3038 ◽  
Author(s):  
Yixuan Ku
Keyword(s):  
Short Term Memory ◽  
Event Related Potentials ◽  
Neural Mechanisms ◽  
Neural Oscillations ◽  
Maintenance Period ◽  
Short Term ◽  
Term Memory ◽  
Object Based ◽  
Related Potentials ◽  
Feature Based

Top-down attention biases the short-term memory (STM) processing at multiple stages. Orienting attention during the maintenance period of STM by a retrospective cue (retro-cue) strengthens the representation of the cued item and improves the subsequent STM performance. In a recent article, Backer et al. (Backer KC, Binns MA, Alain C. J Neurosci 35: 1307–1318, 2015) extended these findings from the visual to the auditory domain and combined electroencephalography to dissociate neural mechanisms underlying feature-based and object-based attention orientation. Both event-related potentials and neural oscillations explained the behavioral benefits of retro-cues and favored the theory that feature-based and object-based attention orientation were independent.

Retention Interval Affects Visual Short-Term Memory Encoding

2010 ◽  
Vol 103 (3) ◽  
pp. 1425-1430 ◽  
Author(s):  
Éva M. Bankó ◽  
Zoltán Vidnyánszky
Keyword(s):  
Retention Interval ◽  
Short Term Memory ◽  
Event Related Potentials ◽  
Emotional Expressions ◽  
Memory Encoding ◽  
Short Term ◽  
Term Memory ◽  
Visual Short Term Memory ◽  
N170 Component ◽  
Related Potentials

Humans can efficiently store fine-detailed facial emotional information in visual short-term memory for several seconds. However, an unresolved question is whether the same neural mechanisms underlie high-fidelity short-term memory for emotional expressions at different retention intervals. Here we show that retention interval affects the neural processes of short-term memory encoding using a delayed facial emotion discrimination task. The early sensory P100 component of the event-related potentials (ERP) was larger in the 1-s interstimulus interval (ISI) condition than in the 6-s ISI condition, whereas the face-specific N170 component was larger in the longer ISI condition. Furthermore, the memory-related late P3b component of the ERP responses was also modulated by retention interval: it was reduced in the 1-s ISI as compared with the 6-s condition. The present findings cannot be explained based on differences in sensory processing demands or overall task difficulty because there was no difference in the stimulus information and subjects' performance between the two different ISI conditions. These results reveal that encoding processes underlying high-precision short-term memory for facial emotional expressions are modulated depending on whether information has to be stored for one or for several seconds.

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