Concept

Colliculus supérieur

Publications associées (110)

Transcranial magnetic stimulation (TMS) of early visual but not frontal cortices reveals a feature memory of substantial duration

Michael Herzog, Frank Scharnowski, Johannes Rüter, Nicole Lironi

Objective: How the brain achieves integration of temporally dispersed information is one of the enigmas in the neurosciences. By combining feature fusion with transcranial magnetic stimulation (TMS), we show that individual visual features are stored for s ...

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

Using forward calculations of the magnetic field perturbation due to a realistic vascular model to explore the BOLD effect

José Pedro Rebelo Ferreira Marques

This paper assesses the reliability of the infinite cylinder model used previously in the literature to simulate blood oxygenation level dependent (BOLD) signal changes. A three-dimensional finite element method was applied to a realistic model of the cort ...

Wiley-Blackwell2008

Transcranial Magnetic Stimulation of Early Visual Cortex Reveals a Window of Integration of Substantial Duration.

Michael Herzog, Frank Scharnowski, Johannes Rüter

How the brain achieves integration of temporally dispersed information is one of the enigmas in the neurosciences. By combining feature fusion with transcranial magnetic stimulation (TMS), we show that individual visual features are independently stored fo ...

2007

Feature fusion reveals slow and fast visual memories

Michael Herzog, Frank Scharnowski

Although the visual system can achieve a coarse classification of its inputs in a relatively short time, the synthesis of qualia-rich and detailed percepts can take substantially more time. If these prolonged computations were to take place in a retinotopi ...

Massachusetts Institute of Technology Press2007

Coding gaze tracking data with chromatic gradients for VR exposure therapy

Daniel Thalmann, Bruno Herbelin, Pablo Stanislaw De Heras Ciechomski, Helena Stephanie Grillon Le Gallennec

This article presents a simple and intuitive way to represent the eye-tracking data gathered during immersive virtual reality exposure therapy sessions. Eye-tracking technology can be used to observe gaze avoidance behaviors to provide cognitive and behavi ...

2007

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

Embedding Motion in Model-Based Stochastic Tracking

Daniel Gatica-Perez, Jean-Marc Odobez, Silèye Oumar Ba

Particle filtering (PF) is now established as one of the most popular methods for visual tracking. Within this framework, two assumptions are generally made. The first is that the data are temporally independent given the sequence of object states, and the ...

2006

Proton MRS of the unilateral substantia nigra in the human brain at 4 tesla: Detection of high GABA concentrations

Rolf Gruetter

Parkinson's disease (PD) is characterized by loss of dopaminergic neurons in the substantia nigra (SN), the cause of which is unknown. Characterization of early SN pathology could prove beneficial in the treatment and diagnosis of PD. The present study sho ...

2006

The optomotor response: a robust first-line visual screening method for mice

In both scotopic and photopic conditions, the rotation of a grating was found to elicit head movements in mice. The highest spatial frequency eliciting this optomotor response provided an estimate of visual acuity. In male C57BL/6J mice, visual acuity incr ...

2005

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