Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 70 for “"Psychophysics"”.
-
Bilateral cochlear implants : basic psychophysics
Thesis (Ph. D.)--Harvard--Massachusetts Institute of Technology Division of Health Sciences and Technology, 2000.
-
Computation and psychophysics of sensorimotor integration
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Brain and Cognitive Sciences, 1995.
-
A NEW APPROACH TO ALGORITHM-ORIENTED VISUAL PSYCHOPHYSICS
… holds that through principled application of psychophysics and perceptual modelling, the mechanisms of the visual system can be uncovered. The most common approach has been to measure and model behavioral responses to simple stimuli. However, contemporary neuroscience continues to reveal a …
-
Toward a Psychophysics of Form: A Multidimensional Scaling Analysis of Form Perception
Made available in DSpace on 2014-12-10T21:07:11Z (GMT). No. of bitstreams: 1 7121216.pdf: 6621103 bytes, checksum: 9cca2e66a1eaa216231624e51d72aa72 (MD5) Previous issue date: 1971
-
On the representation of novel objects : human psychophysics, monkey physiology and computational models
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Brain and Cognitive Sciences, 1996.
-
Characterization and analysis of an MRI compatible robot design for wrist psychophysics and rehabilitation
The MIT Wrist Robot has demonstrated the effectiveness of robotic therapy in aiding the rehabilitation of stroke victims. In order to investigate the neurological processes involved in this therapy and evaluate its effectiveness a patented MRI compatible version of the wrist robot is being …
-
Mechanics of Stimulus & Response Generalization in Signal Detection & Psychophysics: Adaptation of Static Theory to Dynamic Performance.
The area of perceptual decision-making research seeks to understand how our perception of the world affects our judgment. Laboratory investigations of perceptual decision-making concentrate on observers' ability to discriminate among stimuli and their biases towards reporting one stimulus more …
-
Time will tell: Material surface cues for the visual perception of material ageing Insights from psychophysics, online experiments, image processing and a science festival
… with varying methodologies. These included a psychophysics experiment, online experiments, and data collection during a science festival. The latter showed that the general public mentioned “Faded (colour)” most often to describe material change over time and that specific material surface …
-
Reverse engineering object recognition
… thesis presents a collection of work from human psychophysics, monkey electrophysiology, and computational modelling in an effort to reverse-engineer the key computational components that enable this amazing ability in the primate visual system.
-
Face perception : the relationship between identity and expression processing
… is still unclear. Using converging methods of psychophysics and functional magnetic resonance imaging (fMRI) in healthy and patient populations we assessed the relationship between these two perceptual processes. First, using perceptual aftereffects, we explored the neural representations …
-
Contrast adaptation reveals increased organizational complexity of chromatic processing in the visual evoked potential
Results from psychophysics and single-unit recordings suggest that color vision comprises multiple stages of processing. Post-receptoral channels appear to consist of both a stage of broadly-tuned opponent channels that compare cone signals, and a subsequent stage, which includes cells tuned to …
-
An image quality analysis of ANVIS-6 night vision goggles
… SNR. The SNR results are consistent with visual psychophysics and SNR effects. The metric that best related to target recognition was Resolution. The resolution results are consistent with the position that recognition performance improves for suprathreshold targets as resolving power increases.
-
Color : functional organization and behavior
… between humans and macaques. Chapter 3 uses psychophysics and a recently discovered ambiguous color stimulus ('#theDress') to investigate the cues and assumptions used by the human visual system to constrain the classic ill-posed problem of inferring the intrinsic reflectance of an object by …
-
Perceptual picture emphasis using texture power maps
… visual design process. There is evidence from psychophysics that contrast in texture is a key contributor to saliency in an image, yet unlike other low-level perceptual features, texture cannot be directly modified with existing image-processing software. We present a post-processing technique …
-
Byzantine Music Intervals: An Experimental Signal Processing Approach
… to the notion of pitch discrimination from psychophysics we further established that the frequency differences are minute. The Attraction Effect was tested for a secondary tone (E) and the effect is quantified for the first time. The concept of the Attraction Effect is not explained in …
-
Characterizing Image Recognition Difficulty in Artificial and Biological Visual Processing
… image recognition difficulty as defined by human psychophysics. Using behavioral experiments with humans, we are able to identify images that humans struggle to recognize and investigate the prevalence of these images in datasets and their effect on model performance. To shed light on how humans …
-
Modelling the human perception of shape-from-shading
… algorithm is broadly consistent with the known psychophysics on human SFS.
-
A vibrotactile display design for the feedback of external prosthesis sensory information to the amputee wearer
… mappings were designed based on previous work in psychophysics, haptics, and HCI. These schematics include a spatial discrimination pattern, an amplitude modulated pattern, and a gap detection pattern. To assess the effectiveness of the system, lower-limb amputees were asked to learn the three …
-
Seeing by moving: revisiting pattern vision through fixational eye movements
… shift, it integrates computational modeling, psychophysics, and new experimental tools to explore how ocular drift influences edge and pattern perception. The first part of this thesis revisits foundational assumptions in spatial vision. In a first study, it presents a proof-of-concept model …
Page 1 of 4