Vision Using Routines: A Functional Account of Vision
نویسنده
چکیده
This paper presents the case for a functional account of vision. A variety of studies have consistently revealed “change blindness” or insensitivity to changes in the visual scene during an eye movement. These studies indicate that only a small part of the information in the scene is represented in the brain from moment to moment. It is still unclear, however, exactlywhat is included in visual representations. This paper reviews experiments using an extended visuo-motor task, showing that display changes affect performance differently depending on the observer’s place in the task. These effects are revealed by increases in fixation duration following a change. Different task-dependent increases suggest that the visual system represents only the information that is necessary for the immediate visual task. This allows a principled exploration of the stimulus properties that are included in the internal visual representation. The task specificity also has a more general implication that vision should be conceptualized as an active process executing special purpose “routines” that compute only the currently necessary information. Evidence for this view and its implications for visual representations are discussed. Comparison of the change blindness phenomenon and fixation durations shows that conscious report does not reveal the extent of the representations computed by the routines.
منابع مشابه
Study of Photoisomerization in Cis-Retinal as a Natural Photo Switch in Vision Using Density Functional Theory
In the present study, theoretical chemical reactivates Photo isomerization in Cis-Retinal as a Natural Photo switch in Vision. DFT hybrid functional, B3LYP and, post-HF method, were the theoretical methods applied utilizing G09 software. 6-31G+ (d,p) basis set employed for structural optimizations, and single point computations performed using B3LYP/6-31G+(d,p). The isomers cis molecule retinal...
متن کاملStudy of Photoisomerization in Cis-Retinal as a Natural Photo Switch in Vision Using Density Functional Theory
In the present study, theoretical chemical reactivates Photo isomerization in Cis-Retinal as a Natural Photo switch in Vision. DFT hybrid functional, B3LYP and, post-HF method, were the theoretical methods applied utilizing G09 software. 6-31G+ (d,p) basis set employed for structural optimizations, and single point computations performed using B3LYP/6-31G+(d,p). The isomers cis molecule retinal...
متن کاملInvestigation of the Functional Balance in Children with Sensory Impairment 6 to 14 Years
Aim: The human body is kept in balance by a complicated process including visual, vestibular, and proprioceptive information. Since the postural control systems require information from all three sensory systems in order to achieve or maintain optimal postural stability, the absence of information of one system may have an influence on body sway during balance .The purpose of this study was to ...
متن کاملConsistent Modeling of Functional Dependencies along with World Knowledge
In this paper we propose a method for vision systems to consistently represent functional dependencies between different visual routines along with relational shortand long-term knowledge about the world. Here the visual routines are bound to visual properties of objects stored in the memory of the system. Furthermore, the functional dependencies between the visual routines are seen as a graph ...
متن کاملParameters Identification of an Experimental Vision-based Target Tracker Robot Using Genetic Algorithm
In this paper, the uncertain dynamic parameters of an experimental target tracker robot are identified through the application of genetic algorithm. The considered serial robot is a two-degree-of-freedom dynamic system with two revolute joints in which damping coefficients and inertia terms are uncertain. First, dynamic equations governing the robot system are extracted and then, simulated nume...
متن کامل