Differentiation of Receiver Operating Characteristics Based on Corpus Callosum Volume in a Visual-Short Term Memory Paradigm

2014 ◽  
Author(s):  
Shuo Qin ◽  
Chandramalika Basak ◽  
Nithya Ramakrishnan
2016 ◽  
Vol 53 (11) ◽  
pp. 1639-1650 ◽  
Author(s):  
Shuo Qin ◽  
Nicholas R. Ray ◽  
Nithya Ramakrishnan ◽  
Kaoru Nashiro ◽  
Margaret A. O'Connell ◽  
...  

Author(s):  
Kevin Dent

In two experiments participants retained a single color or a set of four spatial locations in memory. During a 5 s retention interval participants viewed either flickering dynamic visual noise or a static matrix pattern. In Experiment 1 memory was assessed using a recognition procedure, in which participants indicated if a particular test stimulus matched the memorized stimulus or not. In Experiment 2 participants attempted to either reproduce the locations or they picked the color from a whole range of possibilities. Both experiments revealed effects of dynamic visual noise (DVN) on memory for colors but not for locations. The implications of the results for theories of working memory and the methodological prospects for DVN as an experimental tool are discussed.


Author(s):  
Yuhong Jiang

Abstract. When two dot arrays are briefly presented, separated by a short interval of time, visual short-term memory of the first array is disrupted if the interval between arrays is shorter than 1300-1500 ms ( Brockmole, Wang, & Irwin, 2002 ). Here we investigated whether such a time window was triggered by the necessity to integrate arrays. Using a probe task we removed the need for integration but retained the requirement to represent the images. We found that a long time window was needed for performance to reach asymptote even when integration across images was not required. Furthermore, such window was lengthened if subjects had to remember the locations of the second array, but not if they only conducted a visual search among it. We suggest that a temporal window is required for consolidation of the first array, which is vulnerable to disruption by subsequent images that also need to be memorized.


2013 ◽  
Author(s):  
Deepna T. Devkar ◽  
Wei Ji Ma ◽  
Jeffrey S. Katz ◽  
Anthony A. Wright

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