Ulrich J. Pfeiffer, Kai Vogeleya and Leonhard Schilbacha "From gaze cueing to dual eye-tracking: Novel approaches to investigate the neural correlates of gaze in social interaction" Neuroscience and Bio behavioral Reviews 26 July 2013

REVIEW:-Eye-tracking technology where gives an easy access to sensorimotor and involve easy monitoring, the technology of gaze tracking in social world gives better results. Present review over development and application of methodologies to study gaze is a powerful tool in socialcognitive neuroscience. It improvises the previously done researches done over eye tracking to invade the social cognition to a higher level. It stated that by providing reading from a persons eye, how he/she gazes while watching one or other objects can define their perceptions related to that objects and can help in considering the future response of that person which will be based on his/her psychological conditions compiled in to a database. This gives scientists a way to go beyond social cognition and observations on a singular person by obtaining their behavioral and neural measures while the person is participating in a real dynamic world and by the help of sensorimotor the data is collected according to the gaze to different objects and by comparing it with other gazes of that person. By collecting data of different humans so that a data of different psychologies is collected so that it can help challenged persons by comparing their gaze with others and giving a proper response to the machine so that they can interact with outer world to solve their daily life problems.

Lance Gentry Marketing and Eye-Tracking Machines: Research Opportunities for an Affordable Tool Journal of International Management Studies, Department of Business Administration, University of Missouri-Rolla, USA, August 2007

REVIEW:-In start of the eye tracking system the cost of machines used in eye tracking were very high so the experiments possible with machines were limited but as the Moores law improved the cost of the machines got decreased and the area of experiments over different portions of the process expanded. These portions included the attention paid by the patient on the machine while watching the images on the screen where his eyes were tracked. The picture quality, colors included, graphics, size, place, position and much more were considered. If the person getting checked for normal checkup and do not pay attention to the images and his mind gets diverted every very often. To do the check up the images are more colorful, attractive and have good resolutions. The motive of the image is to map the signals of brain with respect to the response of person to the image in different conditions. For marketing research, the advertisement published is such that it attracts human from other things. This is done by examining different human by the eye tracking system and analyzing their response. For example if the image is colored the response is 92% while black and white have 84% chances of attraction. If we add graphics (Moving pictures or 3D images) then the efficiency increases to 94% - 96% based on the quality of graphics. The high size of the image also increases the efficiency of eye tracking system. The foremost important point of the image is the inclusion given to it. It has an intrinsic tendency to increase the efficiency by providing more attraction for the person. It can be concluded that by increasing the efficiency of an eye tracking system one can also increase its marketing value by providing the advertisement with high attraction which are tested by the system.