Human Perception And Performance Pdf

human perception and performance pdf

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My research investigates diverse aspects of processing in the human object recognition system. I am particularly interested in how we achieve visual and haptic object constancy and how we categorise stimuli in order to discriminate between different shapes. Haptics is active touch. I conduct empirical research which measures the speed and accuracy of human performance at recognising familiar and novel objects using our eyes or our hands in the face of disruptive object transformations such as plane and depth rotation and size changes.

I also manipulate memory, context and attentional demands on participants. There are a group of us working on a range of topics within visual perception here at the School of Psychology in the University of Liverpool, in the Visual Perception Group.

In particular, Marco Bertamini and I collaborate on research into people's perception and beliefs about images on mirrors and windows and we have also been investigating the role of convexities and concavities in determining the shape and, in particular, the part structure of objects. Marco Bertamini's website is here. If you want to contact me about my research, my email address is rlawson liv. Me, Marco, Susan Dan Liu and Marco's son, Leonardo, holding our experimental stimuli for the mirror and window studies.

I investigate how humans recognise, categorise and understand the function of everyday objects, concentrating on three areas. I examine how our visual system achieves view generalisation for similar and dissimilar objects by comparing performance with novel objects to everyday, familiar objects and for 2D images relative to 3D objects. I also investigate whether accounts of visual object recognition can be extended to predict performance at haptic object recognition and if objects presented visually or haptically activate bi-modal visual-haptic representations.

In addition I probe what people understand about how objects function and the limitations of their knowledge. Together this research provides converging evidence about how people process different sources of information about familiar objects. The aim is to establish a coherent theoretical framework for understanding the perceptual and conceptual processes involved in object recognition and understanding.

It's easy for academics to notch up thousands of airmiles annually. Since , I have stopped flying to conferences or institutions in order to reduce my carbon footprint. Email and the web reduces the need to travel and I try to combine conferences with holidays. If you want to know more, try wikipedia on aviation and climate change or this briefing from Airportwatch or, if you prefer a good rant, try Julian's Myron Ebbell blog - you were warned.

Muddy, after a trip down Ireby Fell Caven in Yorkshire. Peer-reviewed publications with links to abstracts and to PDF files and submitted papers. Bertamini, M. The Venus effect in real life and in photographs. Under submission. Craddock, M. The effects of temporal delay and orientation on haptic object recognition. Lawson, R. People cannot locate the projection of an object on the surface of a mirror.

Cognition, , Click to download PDF of paper or for the text of the abstract only. Size-sensitive perceptual representations underlie visual and haptic object recognition. Do left and right matter for haptic object recognition of familiar objects? Perception, 38, The effects of size changes on haptic object recognition.

A comparison of the effects of depth rotation on visual and haptic three-dimensional object recognition.

Repetition priming and the haptic recognition of familiar and unfamiliar objects. Perception and Psychophysics, 70, Using morphs of familiar objects to examine how shape discriminability influences view sensitivity. Rapid figure-ground responses to stereograms reveal an advantage for a convex foreground.

Perception, 37, Understanding 2D projections on mirrors and on windows. Spatial Vision, 21, Overestimation of the projected size of objects on the surface of mirrors and windows. Local and global processing biases fail to influence face, object and word recognition. Visual Cognition, 15, Visual search for a circular region perceived as a figure versus as a hole: Evidence of the importance of part structure. Perception and Psychophysics, 68, The science of cycology: Failures to understand how everyday objects work.

Memory and Cognition, 34, Errors in judging information about reflections in mirrors. Perception, 35, Comparing view sensitivity in shape discrimination with shape sensitivity in view discrimination. Recognising a plane-rotated view of a familiar object is not influenced by the ease of specifying the main axis of elongation of that object. Perception and Psychophysics, 66, Depth rotation and mirror-image reflection reduce affective preference as well as recognition memory for pictures of novel objects.

Memory and Cognition, 32, View-sensitivity increases for same shape matches if mismatches show pairs of more similar shapes. Psychonomic Bulletin and Review, 11 The effects of context on learning to identify plane-misoriented views of familiar objects. Visual Cognition, 10, Interactions between view changes and shape changes in picture-picture matching. Perception, 32, Recognition thresholds for plane-rotated pictures of familiar objects.

Acta Psychologica, , The combined effects of plane disorientation and foreshortening on picture naming: one manipulation or two? Achieving visual object constancy over plane rotation and depth rotation. The effects of view in depth on the identification of line drawings and silhouettes of familiar objects: normality and pathology. Visual Cognition, 6, The effect of prior experience on recognition thresholds for plane-disoriented pictures of familiar objects.

Memory and Cognition, 27, Jolicoeur, P. The influence of perceived rotary motion on the recognition of rotated objects. Psychonomic Bulletin and Review, 5, Click to download PDF of paper or for the click here for text of the abstract only.

View-specific effects of depth rotation and foreshortening on the initial recognition and priming of familiar objects. Perception and Psychophysics, 60, The neuropsychology of visual object constancy. Kulikowski Eds. Cambridge: Cambridge University Press. The effects of plane rotation on the recognition of brief masked pictures of familiar objects.

Memory and Cognition, 26, View-specificity in object processing: Evidence from picture matching. Click to download PDF file of paper or for the text of the abstract only.

Object recognition under sequential viewing conditions: evidence for viewpoint-specific recognition procedures. Perception, 23, Valentine, T. European Journal of Cognitive Psychology, 3, On a frozen lake in Austria. Search University of Liverpool for. There are a group of us working on a range of topics within visual perception here at the School of Psychology in the University of Liverpool, in the Visual Perception Group In particular, Marco Bertamini and I collaborate on research into people's perception and beliefs about images on mirrors and windows and we have also been investigating the role of convexities and concavities in determining the shape and, in particular, the part structure of objects.

Peer-reviewed publications with links to abstracts and to PDF files and submitted papers Bertamini, M.

A Human Perception Based Performance Evaluation of Image Quality Metrics

Though numerous image quality measures have been proposed, the search for a reliable IQM is still vigorously pursued by different research groups around the world. There is a need to compare the already proposed IQMs with respect to their adherence to human image quality perception. A model that can accurately simulate the human perception of image quality is a challenging task due to limited human knowledge in the related domains of psychology, vision, biology etc. The psycho-visual experiments remain the most accurate way to model human perception of visual quality. In this paper, different state of the art full-reference objective image quality metrics IQMs are evaluated against human subjective judgments on standard LIVE image quality database. The difference mean opinion scores DMOS were calculated from human judgments on images distorted with white noise, Gaussian blur and Rayleigh fast-fading distortions.

The study of time perception is a field within psychology , cognitive linguistics [1] and neuroscience that refers to the subjective experience, or sense, of time , which is measured by someone's own perception of the duration of the indefinite and unfolding of events. Though directly experiencing or understanding another person's perception of time is not possible, such a perception can be objectively studied and inferred through a number of scientific experiments. Some temporal illusions help to expose the underlying neural mechanisms of time perception. Pioneering work, emphasizing species-specific differences, was conducted by Karl Ernst von Baer. Time perception is usually categorized under the following three distinct ranges, because different ranges of durations are processed in different parts of the brain. There are many theories and computational models for time perception mechanisms in the brain.

Time perception

Get the latest via Pubmed InfoPath. Jeck, D. Egeth, H.

Rebecca Lawson's research

Copyright notice: The PDFs on this page are provided to facilitate the non-commercial exchange of scientific information. The publishers of these articles hold the copyright. Anyone downloading a PDF from this page should use it in manner consistent with the fair use provisions of U. In particular, downloaded PDFs should not be distributed or used for any profit-making enterprise. Stepper, M. Illusory size influences the perception of ambiguous apparent motion.

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PDF | Humans are routinely asked to evaluate the performance of other individuals, separating success from failure and affecting outcomes.


Relationships between perception and action

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Clarke-Davidson, C. Does perceptual learning in speech reflect changes in phonetic category representation or decision bias? Ju, M. Representational specificity of within-category phonetic variation in the long-term mental lexicon. Newman, R. Do postonset segments define a lexical neighborhood? McLennan, C.

My research investigates diverse aspects of processing in the human object recognition system. I am particularly interested in how we achieve visual and haptic object constancy and how we categorise stimuli in order to discriminate between different shapes. Haptics is active touch. I conduct empirical research which measures the speed and accuracy of human performance at recognising familiar and novel objects using our eyes or our hands in the face of disruptive object transformations such as plane and depth rotation and size changes. I also manipulate memory, context and attentional demands on participants. There are a group of us working on a range of topics within visual perception here at the School of Psychology in the University of Liverpool, in the Visual Perception Group.

My research investigates diverse aspects of processing in the human object recognition system. I am particularly interested in how we achieve visual and haptic object constancy and how we categorise stimuli in order to discriminate between different shapes. Haptics is active touch.

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The focus of this research is on how motor processes contribute to the perception of environment and of own body.

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