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Processing time of object characteristics in visual work memory

April 10, 2020 01:20 Source: "China Social Sciences", April 10, 2020, No. 1904 Author: Wu Wenchun

　　Work memory is a concept proposed by Baddeley and Hitch in 1974，Its function is to temporarily process and store the input stimulus information，It is also a limited memory system。Compared with short -term memory，It also emphasizes strategic processing of information in the current activity or task。Typical work memory model includes three basic ingredients: voice circuit、Visual Space Template and Central Executive System。Where，Voice circuits are also known as speech work memory，Responsible for information storage and control based on sound -based information，Contains two processes including voice storage and pronunciation control，Voice portraits that can re -activate the fading by silence to prevent forgetting，You can also convert the written language to voice code。Visual space painting board is also known as visual work memory，It is mainly responsible for storing and processing visual information。The central execution system is the core of work memory，Responsible for the entire work memory process，Activity between the two subsystems of the visual space template and the voice circuit through the combination of the mechanism with the attention mechanism，Keep contact with long -term memory。

　　In the 30 % score model，The visual work memory of the subsystem is one of the most active research fields of cognitive psychology and cognitive neuroscience for more than 20 years，The key problem is the problem of feature processing and storage。and feature Bet365 app download processing is divided into two aspects: processing method and processing time。At present, the processing and storage mechanism of visual work memories of the academic community has conducted a lot of effective research，For the timing of objective processing，Not much research，The theoretical views proposed by the researchers are also less。For this，We sorted out the relevant theory and proposed the three -stage theory of characteristic processing on the basis of existing research。

　　Feature integration theory

　　There is a close two -way effect between visual work memory and attention and visual perception。In the process of visual work memory，People need to be the characteristics (such as shape、Color, etc.) Processing、Integrated，Svein believes that this stage belongs to the perception coding stage or the consciousness stage。In this short processing process，People often do not realize the specific characteristics of the stimulus，and always conscious it as a unified overall，This means that the brain needs to connect the decentralized information distributed in different cortex areas reasonably and quickly。This process is characterized by feature binding。So，Does people pay attention to the characteristics of object characteristics in visual work memory? The feature integration theory proposed by Treisman and Gelade in 1980 gave detailed answers。They specifically distinguish between objects (objects) and characteristics，See features as a specific value of a dimension，and the object is the combination of some features。For example，Blue and circles are a specific value on the two characteristic dimensions bet365 live casino games of color and shape, respectively，Blue circular is a object composed of the two characteristics of blue and circles。Feature integration theory Consid by，The feature is to analyze the independent sensing subsystem of the functional independent perception，This processing is performed in parallel，and the recognition of the object requires concentration to pay attention to participation，Is the result of the series of processing，Its function is to bundle the characteristics of the object to form a single complete unit。According to the point of view of Trisman and others，Feature integration theory should include two processing stages，The first stage is to quickly analyze and identify each characteristic，In the second stage of the participation of concentration, the characteristics are bundled，to form a complete object。

　　Double -stage theory bundled with features

　　Humphreys and others believe that feature integration theory only considers the binding of the stages，and ignore the bondage of the previous attention stage; so，On the basis of a series of experiments，They proposed the double -stage theory of binding。This theory thinks，Feature bundles are divided into two stages of paying attention to binding and paying attention to binding。In the first stage，Component of the object (that is, the overall characteristics) is bundled first，so that the object has an overall image。If you are in vision，First bind the overall characteristics such as shapes into an object contour。The binding of this stage is to pay attention to it，Including the bottom -up organizational process of the overall component based on stimulation，At the same time, it includes bet365 live casino games a top -down activation based on the representation of the storage objects。In the second stage，Under the participation of attention，Binding the details of the object，To form a specific and complete image of the object。If you are in vision，Binding of the overall shape and color of the object belongs to the binding of this stage。From this can be referred to，Binding between the ingredients of the shape occurs at the earlier stage，Binding of surface characteristics such as shape and color occurs at a late stage。

　　Chen Caiqi、Liu Zhihua and Jin Zhicheng think，This theory has a more detailed distinction on the binding mechanism，Breeding two different levels of bundling phenomena，It is of great significance to establish a system binding theory。Since then，Zhang Ming and Di Shengde adopt a plane figure composed of two characteristics of shape and color as stimulating materials，Check the processing time of the object in work memory，Results indicate，The representation of the work memory of visual objects includes two levels，The first layer is processed and stored the characteristics of the object，The second layer is the binding of features。The processing of the second level is not necessary，Binding is only performed when the task needs，The process of binding and binding conforms to the double -stage theory of characteristic bundles。

　　Three -stage theory of feature processing

　　Take a comprehensive，The theory of the theory of characteristic integration theory and characteristics has its own experimental basis，each has its own reasonable，There is also a deficiency。After careful analysis, find out，Feature integration theory is to divide the characteristics of the object as a whole Bet365 lotto review into a single feature processing (coding) and characteristic binding of the characteristics，and the two -stage theory is a specific stage decomposition for the process of binding features，The former did not subdivide the feature binding，and did not conduct inspections and comparisons for different types (dimensions) or different complexity features of the component object，The latter does not involve a single feature processing process。other，Double phase theory, although there are two characteristics bundled by different dimensions to conduct system inspection and confirmation of the time and phase of different dimensions，But its views and conclusions are not consistent with the many research results in the subsequent research。Double phase theory thinks，The overall characteristics of the object of the shape are prioritized by processing binding，The surface feature of the color is defined as the details feature，It takes the second stage to get bundled。But，Most scholars think，Color is a basic feature of objects rather than details;，Different processing time of different features，The processing of the color is completed earlier，Good memory effect，and the shape of the shape is relatively late，The effect of memory is also poor，The subsystem advantage that shows color。Shen Mowei and others and Wu Wenchun found that color characteristics and memory performance of color characteristics is higher than the shape features in the study of object memory memory;，Eye movement experiments of Ding Jinhong and others and Zhang Bao and others have also confirmed the priority of color attribute processing。

　　So，Different types bet365 live casino games of characteristics of the objects are different in processing? What is the specific process of processing (including bundling) in visual work memory?、Chen Jiaqian and Liu Chang have recently adopted three -dimensional three -dimensional graphics as memory materials to verify this，The figure of the experiment 1 consists of two basic characteristics: color and shape，Experiment 2 The figure consists of basic characteristic colors and details characteristic patterns。Results indicate，The characteristic processing in the memory of object work is significant time effect，The earliest completion of color processing，Then the bundle of shape and color -shape，Finally, the bundle of the pattern and color -pattern。Based on this，Research by Zhang Ming and Di Shengde，We think，The processing time of object features in visual work memory should include three stages: the first stage is processing of color features，The second stage is the processing and the bundle between the characteristics of the shape and the characteristics of the characteristics，The third stage is details or complex features (such as pattern、texture) processing and binding between characteristics。Of course，The viewpoint of the three -stage theory needs to be further studied and verified，Especially the support of eye movements and ERP brain electrical experiments。

　　(This article is the achievement of the "Twelfth Five -Year Plan for the Twelfth Five -Year Plan" (GD14XXL03) in Guangdong Province)

　　(Author Unit: School of Education and Science, Hanshan Teachers College)

Editor in charge: Changchang