scholarly journals Corrigendum: Training on Movement Figure-Ground Discrimination Remediates Low-Level Visual Timing Deficits in the Dorsal Stream, Improving High-Level Cognitive Functioning, Including Attention, Reading Fluency, and Working Memory

2018 ◽  
Vol 12 ◽  
Author(s):  
Teri Lawton ◽  
John Shelley-Tremblay
Keyword(s):  
Working Memory ◽  
Cognitive Functioning ◽  
Reading Fluency ◽  
Dorsal Stream ◽  
Low Level ◽  
High Level

High level estradiol impairs and low level estradiol facilitates non-spatial working memory

2004 ◽  
Vol 155 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Jennifer K. Wide ◽  
Katherine Hanratty ◽  
Julia Ting ◽  
Liisa A.M. Galea
Keyword(s):  
Working Memory ◽  
Spatial Working Memory ◽  
Low Level ◽  
High Level

scholarly journals Distraction biases working memory for faces

2019 ◽  
Author(s):  
Remington Mallett ◽  
Anurima Mummaneni ◽  
Jarrod Lewis-Peacock
Keyword(s):  
Working Memory ◽  
Irrelevant Information ◽  
Visual Features ◽  
Maintenance Period ◽  
Stimulus Space ◽  
Estimation Task ◽  
Low Level ◽  
The Face ◽  
High Level ◽  
Task Irrelevant

Working memory persists in the face of distraction, yet not without consequence. Previous research has shown that memory for low-level visual features is systematically influenced by the maintenance or presentation of a similar distractor stimulus. Responses are frequently biased in stimulus space towards a perceptual distractor, though this has yet to be determined for high-level stimuli. We investigated whether these influences are shared for complex visual stimuli such as faces. To quantify response accuracies for these stimuli, we used a delayed-estimation task with a computer-generated “face space” consisting of eighty faces that varied continuously as a function of age and sex. In a set of three experiments, we found that responses for a target face held in working memory were biased towards a distractor face presented during the maintenance period. The amount of response bias did not vary as a function of distance between target and distractor. Our data suggest that, similar to low-level visual features, high-level face representations in working memory are biased by the processing of related but task-irrelevant information.

scholarly journals Neural Timing Deficits Prevalent in Developmental Disorders, Aging, and Concussions Remediated Rapidly By Movement Discrimination Exercises

2021 ◽  
Author(s):  
Teri Lawton ◽  
John Shelley-Tremblay ◽  
Ming-Xiong Huang
Keyword(s):  
Working Memory ◽  
Processing Speed ◽  
Cognitive Skills ◽  
Developmental Disorders ◽  
Visual Motion ◽  
Source Imaging ◽  
Low Level ◽  
Before And After ◽  
High Level ◽  
Movement Discrimination

(1) Background: Substantial evidence that neural timing deficits are prevalent in developmental disorders, aging, and concussions resulting from a mild Traumatic Brain Injury (mTBI) is presented. We show that if timing deficits are remediated using low-level movement discrimination training, then high-level cognitive skills, including reading, attention, processing speed, and working memory improve substantially. (2) Methods: Two case studies are presented using MEG source imaging on an adult dyslexic, and a healthy older adult observed before and after training on movement discrimination two times/week for 8 weeks for adult dyslexic. (3) Results: We found improvements in reading, attention, processing speed, and working memory on neuropsychological tests. Substantial MEG signal increases in visual Motion Networks (V1, V3, MT, MST), Attention Networks (ACC, dlPFC, vlPFC and precuneous/ PCC areas) and Memory Networks (dlPFC). (4) Conclusions: Improving neural timing deficits before cognitive exercises to improve specific cognitive skills provides a rapid and effective method to improve cognitive skills. Improving the timing and sensitivity of low-level dorsal pathways, improving feedforward and feedback pathways, is essential to improve high-level cognitive skills. This adaptive training with substantial feedback shows cognitive transfer to tasks not trained on, significantly improving a person’s quality of life rapidly and effectively.

On the perceptual and neural correlates of reading models

2003 ◽  
Vol 26 (4) ◽  
pp. 495-496 ◽  
Author(s):  
Naoyuki Osaka
Keyword(s):  
Working Memory ◽  
Executive Function ◽  
Current Model ◽  
Neural Correlates ◽  
Central Executive ◽  
Size Difference ◽  
Writing System ◽  
Attentional Processing ◽  
Low Level ◽  
High Level

The current model appears comprehensive but is probably not applicable to a writing system like Japanese, which has unspaced text, because the model is mainly based on English. The span size difference (smaller for Japanese than for English) may be a result of high-level working memory-based attentional processing and not of low-level processing. Further, neural correlates of the model are discussed in terms of central executive function.

scholarly journals Visual perception as retrospective Bayesian decoding from high- to low-level features

2017 ◽  
Vol 114 (43) ◽  
pp. E9115-E9124 ◽  
Author(s):  
Stephanie Ding ◽  
Christopher J. Cueva ◽  
Misha Tsodyks ◽  
Ning Qian
Keyword(s):  
Working Memory ◽  
Visual Perception ◽  
Human Perception ◽  
Quantitative Comparison ◽  
Global Precedence ◽  
Low Level ◽  
Memory Representations ◽  
High Level ◽  
The Brain ◽  
Different Parts

When a stimulus is presented, its encoding is known to progress from low- to high-level features. How these features are decoded to produce perception is less clear, and most models assume that decoding follows the same low- to high-level hierarchy of encoding. There are also theories arguing for global precedence, reversed hierarchy, or bidirectional processing, but they are descriptive without quantitative comparison with human perception. Moreover, observers often inspect different parts of a scene sequentially to form overall perception, suggesting that perceptual decoding requires working memory, yet few models consider how working-memory properties may affect decoding hierarchy. We probed decoding hierarchy by comparing absolute judgments of single orientations and relative/ordinal judgments between two sequentially presented orientations. We found that lower-level, absolute judgments failed to account for higher-level, relative/ordinal judgments. However, when ordinal judgment was used to retrospectively decode memory representations of absolute orientations, striking aspects of absolute judgments, including the correlation and forward/backward aftereffects between two reported orientations in a trial, were explained. We propose that the brain prioritizes decoding of higher-level features because they are more behaviorally relevant, and more invariant and categorical, and thus easier to specify and maintain in noisy working memory, and that more reliable higher-level decoding constrains less reliable lower-level decoding.

Pointing the way to a unified theory of action and perception

1997 ◽  
Vol 20 (4) ◽  
pp. 749-750 ◽  
Author(s):  
Mel Goodale
Keyword(s):  
Cerebral Cortex ◽  
Visual Processing ◽  
Dorsal Stream ◽  
Ventral Stream ◽  
Theory Of Action ◽  
Unified Theory ◽  
Low Level ◽  
Cognitive Operations ◽  
Action And Perception ◽  
High Level

Deictic coding offers a useful model for understanding the interactions between the dorsal and ventral streams of visual processing in the cerebral cortex. By extending Ballard et al.'s ideas on teleassistance, I show how dedicated low-level visuomotor processes in the dorsal stream might be engaged for the services of high-level cognitive operations in the ventral stream.

scholarly journals Effects of Depressed Mood on Syllogistic Reasoning: The Buffering Role of High Working Memory Span

2021 ◽  
Vol 12 ◽  
Author(s):  
Jaroslaw Wasielewski ◽  
Klara Rydzewska ◽  
Grzegorz Sedek
Keyword(s):  
Working Memory ◽  
Depressed Mood ◽  
Memory Span ◽  
Working Memory Capacity ◽  
Memory Capacity ◽  
Syllogistic Reasoning ◽  
Low Level ◽  
Operation Span ◽  
High Level

Previous research provided consistent evidence for the existence of the unique cognitive limitation in depressed mood: the impairment of the construction of mental models. In the current research, we applied the classical paradigm using categorical syllogisms to examine the relationship between depressed mood and integrative reasoning, aiming at gathering research evidence on the moderating role of the operation span of working memory. Specifically, we examine the hypothesis that high working memory capacity is a buffering variable and acts as a protective factor preventing the negative impact of depressed mood on syllogistic reasoning. A categorical syllogism, in the simpler evaluative form, consists of two premises (that are assumed to be true) and a conclusion that is to be evaluated as valid (when it follows logically from the premises) or invalid (when it does not follow from the premises). In the cover story, we informed participants that they would read about some observations carried out in a normal garden (believable conclusions) versus in a garden with radical genetic transformations (unbelievable conclusions) in order to stimulate the emergence of belief bias. The participants were 115 high school students who filled out the BDI scale and completed the OSPAN task. In line with predictions, there were main effects of depressed mood and operation span on the accuracy of performance (worse performance in the group with a high in comparison to a low level of depressed mood and much worse performance in low compared to high OSPAN participants). The analyses yielded a strong interaction effect of Depressed mood × OSPAN × Conflict. For participants with high levels of working memory capacity, there were no limitations related to a high level of depressed mood in syllogistic reasoning. On the other hand, a different pattern emerged for participants with low working memory span. In this group, participants with a high level of depressed mood in comparison to those with a low level of depressed mood showed much higher limitations in syllogistic reasoning, especially in reasoning concerning conflict syllogisms. We discuss the implications of this research for recent therapeutic programs using computerized cognitive tasks aimed at individuals with a high level of depressed mood.

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