scholarly journals Mapping the spatial distribution of short-term memory representations for visual motion

2014 ◽  
Vol 14 (10) ◽  
pp. 862-862
Author(s):  
A. C. Riggall ◽  
B. R. Postle
Keyword(s):  
Spatial Distribution ◽  
Visual Motion ◽  
Short Term Memory ◽  
Short Term ◽  
Term Memory ◽  
Memory Representations

scholarly journals Orienting Attention to Short-Term Memory Representations via Sensory Modality and Semantic Category Retro-Cues

eNeuro ◽  
2020 ◽  
Vol 7 (6) ◽  
pp. ENEURO.0018-20.2020
Author(s):  
Kristina C. Backer ◽  
Bradley R. Buchsbaum ◽  
Claude Alain
Keyword(s):  
Short Term Memory ◽  
Sensory Modality ◽  
Semantic Category ◽  
Short Term ◽  
Term Memory ◽  
Memory Representations

scholarly journals Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation

2021 ◽  
Author(s):  
Andrea Pavan ◽  
Filippo Ghin ◽  
Gianluca Campana
Keyword(s):  
Retention Interval ◽  
Visual Motion ◽  
Short Term Memory ◽  
Late Phase ◽  
Memory Encoding ◽  
Short Term ◽  
Motion Direction ◽  
Term Memory ◽  
Visual Short Term Memory ◽  
Functional Integrity

We investigated the role of the human medio-temporal complex (hMT+) in the memory encoding and storage of a sequence of four coherently moving RDKs by applying repetitive transcranial magnetic stimulation (rTMS) during an early or late phase of the retention interval. Moreover, in a second experiment we also tested whether disrupting the functional integrity of hMT+ during the early phase impaired the precision of the encoded motion directions. Overall, results showed that both recognition accuracy and precision were worse in middle serial positions, suggesting the occurrence of primacy and recency effects. We found that rTMS delivered during the early (but not the late) phase of the retention interval was able to impair not only recognition of RDKs, but also the precision of the retained motion direction. However, such impairment occurred only for RDKs presented in middle positions along the presented sequence, where performance was already closer to chance level. Altogether these findings suggest an involvement of hMT+ in the memory encoding of visual motion direction. Given that both position sequence and rTMS modulated not only recognition but also precision of the stored information, these findings are in support of a model of visual short-term memory with a variable resolution of each stored item, consistent with the assigned amount of memory resources, and that such item-specific memory resolution is supported by the functional integrity of area hMT+.

Task- and performance-related modulation of domain-specific auditory short-term memory representations in the gamma-band

NeuroImage ◽  
2009 ◽  
Vol 46 (4) ◽  
pp. 1127-1136 ◽  
Author(s):  
Jochen Kaiser ◽  
Werner Lutzenberger ◽  
Christin Decker ◽  
Michael Wibral ◽  
Benjamin Rahm
Keyword(s):  
Short Term Memory ◽  
Gamma Band ◽  
Short Term ◽  
Term Memory ◽  
Domain Specific ◽  
Memory Representations ◽  
And Performance

Memory Representations in Natural Tasks

1995 ◽  
Vol 7 (1) ◽  
pp. 66-80 ◽  
Author(s):  
Dana H. Ballard ◽  
Mary M. Hayhoe ◽  
Jeff B. Pelz
Keyword(s):  
Eye Movements ◽  
Short Term Memory ◽  
Relevant Information ◽  
Human Cognition ◽  
Short Term ◽  
Term Memory ◽  
Memory Representations ◽  
Series Of Experiments ◽  
The Cost ◽  
Natural Tasks

The very limited capacity of short-term or working memory is one of the most prominent features of human cognition. Most studies have stressed delimiting the upper bounds of this memory in memorization tasks rather than the performance of everyday tasks. We designed a series of experiments to test the use of short-term memory in the course of a natural hand-eye task where subjects have the freedom to choose their own task parameters. In this case subjects choose not to operate at the maximum capacity of short-term memory but instead seek to minimize its use. In particular, reducing the instantaneous memory required to perform the task can be done by serializing the task with eye movements. These eye movements allow subjects to postpone the gathering of task-relevant information until just before it is required. The reluctance to use short-term memory can be explained if such memory is expensive to use with respect to the cost of the serializing strategy.

scholarly journals Visual Short-Term Memory for Coherent and Sequential Motion: A rTMS Investigation

2021 ◽  
Vol 11 (11) ◽  
pp. 1471
Author(s):  
Andrea Pavan ◽  
Filippo Ghin ◽  
Gianluca Campana
Keyword(s):  
Retention Interval ◽  
Visual Motion ◽  
Short Term Memory ◽  
Late Phase ◽  
Memory Encoding ◽  
Short Term ◽  
Motion Direction ◽  
Term Memory ◽  
Visual Short Term Memory ◽  
Functional Integrity

We investigated the role of the human medio-temporal complex (hMT+) in the memory encoding and storage of a sequence of four coherently moving random dot kinematograms (RDKs), by applying repetitive transcranial magnetic stimulation (rTMS) during an early or late phase of the retention interval. Moreover, in a second experiment, we also tested whether disrupting the functional integrity of hMT+ during the early phase impaired the precision of the encoded motion directions. Overall, results showed that both recognition accuracy and precision were worse in middle serial positions, suggesting the occurrence of primacy and recency effects. We found that rTMS delivered during the early (but not the late) phase of the retention interval was able to impair not only recognition of RDKs, but also the precision of the retained motion direction. However, such impairment occurred only for RDKs presented in middle positions along the presented sequence, where performance was already closer to chance level. Altogether these findings suggest an involvement of hMT+ in the memory encoding of visual motion direction. Given that both position sequence and rTMS modulated not only recognition but also the precision of the stored information, these findings are in support of a model of visual short-term memory with a variable resolution of each stored item, consistent with the assigned amount of memory resources, and that such item-specific memory resolution is supported by the functional integrity of area hMT+.

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