Publications de Thomas Otto | EPFL Graph Search

The Fate of Visible Features of Invisible Elements

Frontiers Media2012

When Gestalt processing meets low-level feature integration

2012

Non-retinotopic perceptual learning

Perceptual learning is usually specific for the encoded stimuli. For example, improvements in performance for a certain stimulus do not transfer if the stimulus is rotated by 90 degree or is presented at a different location. These findings are usually tak ...

the Association for Research in Vision and Ophthalmology2011

Perceptual learning in a nonretinotopic frame of reference

Michael Herzog, Thomas Otto

Perceptual learning is the ability to improve perception through practice. Perceptual learning is usually specific for the task and features learned. For example, improvements in performance for a certain stimulus do not transfer if the stimulus is rotated ...

Wiley-Blackwell2010

Attention and non-retinotopic feature integration

Michael Herzog, Thomas Otto

Features of moving objects are non-retinotopically integrated along their motion trajectories as demonstrated by a variety of recent studies. The mechanisms of non-retinotopic feature integration are largely unknown. Here, we investigated the role of atten ...

Association for Research in Vision and Ophthalmology2010

Non-retinotopic feature integration decreases response-locked brain activity as revealed by electrical neuroimaging

Michael Herzog, Olaf Blanke, Thomas Otto, Manuel Mercier, Gijs Plomp

When presented with dynamic scenes, the brain integrates visual elements across space and time. Such non-retinotopic processing has been intensively studied from a psychophysical point of view, but little is known about the underlying neural processes. Her ...

Elsevier2009

Feature integration across space, time, and orientation

Michael Herzog, Thomas Otto

The perception of a visual target can be strongly influenced by flanking stimuli. In static displays, performance on the target improves when the distance to the flanking elements increases-presumably because feature pooling and integration vanishes with d ...

American Psychological Association2009

A (fascinating) litmus test for human retino- vs. non-retinotopic processing

Michael Herzog, Thomas Otto, Marco Boi

In human vision, the optics of the eye map neighboring points of the environment onto neighboring photoreceptors in the retina. This retinotopic encoding principle is preserved in the early visual areas. Under normal viewing conditions, due to the motion o ...

Association for Research in Vision and Ophthalmology2009

Non-retinotopic feature integration has a neural pace of its own, as revealed by electrical brain imaging

Michael Herzog, Olaf Blanke, Thomas Otto, Manuel Mercier, Gijs Plomp

When elements appear in quick succession they can integrate across space and time. Using high-density EEG techniques we show that such non-retinotopic feature integration is not time-locked to stimulus onset, but has a timing of its own. We presented a cen ...

2009

A simple psychophysical paradigm to distinguish retinotopic from non-retinotopic processing in vision

Michael Herzog, Thomas Otto, Marco Boi

2009

A Litmus test for retino- vs. non-retinotopic processing

Michael Herzog, Thomas Otto, Marco Boi

Association for Research in Vision and Ophthalmology2009

Non-retinotopic feature integration is pre-attentive

Michael Herzog, Thomas Otto

Association for Research in Vision and Ophthalmology2009

Assessing the microstructure of motion correspondences with non-retinotopic feature attribution

Michael Herzog, Thomas Otto

The motion correspondence problem, one of the classical examples of perceptual organization, addresses the question of how elements are grouped across space and time. Here, we investigate motion correspondences using a new feature attribution technique. We ...

Association for Research in Vision and Ophthalmology2008

Perceptual learning of bisection stimuli under roving: slow and largely specific

Michael Herzog, Thomas Otto

In perceptual learning, performance often improves within a short time if only one stimulus variant is presented, such as a line bisection stimulus with one outer-line-distance. However, performance stagnates if two bisection stimuli with two outer-line-di ...

Association for Research in Vision and Ophthalmology2008

Non-retinotopic motion induced by a Ternus-Pikler display

Michael Herzog, Thomas Otto, Marco Boi

Motion processing is usually deemed to rely on retinotopic coordinates. Using a Ternus-Pikler display, we present an instance in which coherent motion of a dot can only be perceived when its position is integrated non-retinotopically. The stimulus consists ...

2008

Non-retinotopic feature integration in human vision

Thomas Otto

How features are attributed to objects is one of the most puzzling issues in the neurosciences. According to a deeply entrenched view, the analysis of features is spatially localized and, consequently, features are perceived according to the locations wher ...

EPFL2008

Feature integration across space, orientation, and time in human vision

Michael Herzog, Thomas Otto

2008

Integration of contrast across non-retinotopic locations

Michael Herzog, Thomas Otto, Marco Boi

2008

Perceptual learning with spatial uncertainties

Michael Herzog, Thomas Otto

In perceptual learning, stimuli are usually assumed to be presented to a constant retinal location during training. However, due to tremor, drift, and microsaccades of the eyes, the same stimulus covers different retinal positions on sequential trials. Bec ...

Elsevier2006

Perceptual grouping induces non-retinotopic feature attribution in human vision

Michael Herzog, Thomas Otto

The human visual system computes features of moving objects with high precision despite the fact that these features can change or blend into each other in the retinotopic image. Very little is known about how the human brain accomplishes this complex feat ...

Elsevier2006