Icsc 2006

Neuropsychological investigations of visual imagery and representations have led to a deeper understanding of the spatial perception, representation and memory. But how each individual perceives object’s geometrical properties and how they differ from person to person, both under event-related memory and normal recollecting memory in the presence or in the absence of direct sensory stimulation is still unclear. Spatial knowledge is diverse, complex, and multimodal, as are the situations in which it is used. All seem to agree that a cognitive map is a mental representation of an external environment. The image scaling is important in understanding the psychological dysfunctions of patients suffering from spatial cognition problems. The scaling becomes self-evident in art forms, when people are asked to draw image of objects they see actively or from their short or long term memory. In this paper we develop a comprehensive model of this scaling factor and its implications in spatial image representation and memory. We also extend its notion in understanding the perception of objects whose representations are normally not possible (like the perception of universal scales, infinities and parallel lines) but are well comprehended S. K. Ganji • I. Potula • V. N. P. Ambati Department of Biomedical Engineering, University College of Engineering (Autonomous), Osmania University, Hyderabad 500 007, Andhra Pradesh, India B. Rao Department of Physiology, Osmania Medical College, NTR University of Health Sciences, Hyderabad 500 095, Andhra Pradesh, India S. K. Ganji Kakatiya Medical College, NTR University of Health Sciences, Warangal 506 007, Andhra Pradesh, India S. K. Ganji ( ) Osmania Medical College, NTR University of Health Sciences, Hyderabad 500 095, Andhra Pradesh, India e-mail: [email protected]; [email protected] by the human brains. Here we give a scaling factor which is variable depending on the situations for a person based on his visual memory and drawing capabilities. And then extend it to analyse his cognitive strengths, disorders and any imperfections. This model also helps in formalizing the architectural cognitive maps needed to change the scaling factor, depending on the types of visual works one performs.