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Robert Leeb

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Publications associées (60)

Time-Dependent Approach for Single Trial Classification of Covert Visuospatial Attention

José del Rocio Millán Ruiz, Luca Tonin, Robert Leeb

Recently, several studies have started to explore covert visuospatial attention as a control signal for brain–computer interfaces (BCIs). Covert visuospatial attention represents the ability to change the focus of attention from one point in the space with ...

Institute of Physics2012

Online Modulation of the Level of Assistance in Shared Control Systems

Ricardo Andres Chavarriaga Lozano, José del Rocio Millán Ruiz, Robert Leeb, Tom Edward Carlson

In this paper we propose a method to modulate the level of assistance provided by a shared controller, not only given the environmental context, but also according to the context of the user’s current behaviour. We show that the enhanced situational contex ...

2012

BCI Telepresence: A Six Patient Evaluation

José del Rocio Millán Ruiz, Luca Tonin, Robert Leeb, Tom Edward Carlson

In this paper we present the results of six motor-disabled patients manoeuvring a telepresence robot via a BCI. Remarkably, although five of the patients had never visited the location where the telepresence robot was operating, they achieved similar perfo ...

2012

Toward smarter BCIs: extending BCIs through hybridization and intelligent control

Robert Leeb

This paper summarizes two novel ways to extend brain-computer interface (BCI) systems. One way involves hybrid BCIs. A hybrid BCI is a system that combines a BCI with another device to help people send information. Different types of hybrid BCIs are discus ...

Institute of Physics2012

Evaluation of Proportional and Discrete Shared Control Paradigms for Low Resolution User Inputs

José del Rocio Millán Ruiz, Guillaume Monnard, Robert Leeb, Tom Edward Carlson

For people with severe physical disabilities, low resolution input devices, such as buttons, sip and puff switches and brain–computer interfaces provide an opportunity to interact with the world. However, it can be difficult to control assistive technology ...

IEEE2011

A supervised recalibration protocol for unbiased BCI

Ricardo Andres Chavarriaga Lozano, José del Rocio Millán Ruiz, Michele Tavella, Serafeim Perdikis, Robert Leeb

One important source of performance degradation in BCIs is bias towards one of the mental classes. Recent literature has focused on the general problem of classification accuracy drop, identifying non-stationarity as the generating factor, thus leading to ...

2011

A hybrid BCI based on the fusion of EEG and EMG activities

Ricardo Andres Chavarriaga Lozano, José del Rocio Millán Ruiz, Hesam Sagha, Robert Leeb

Hybrid Brain-Computer Interfaces (BCI) are representing a recent approach to develop practical BCIs. In such a system disabled users are able to use all their remaining functionalities as control possibilities in parallel with the BCI. Sometimes these peop ...

Institute of Physics2011

Combining Discriminant and Topographic Information in BCI: Preliminary Results on Stroke Patients

Ricardo Andres Chavarriaga Lozano, José del Rocio Millán Ruiz, Robert Leeb, Andrea Biasiucci, Benjamin Hamner

Non–Invasive Brain–Computer Interfaces (BCI) convey a great potential in the field of stroke rehabilitation, where the continuous monitoring of mental tasks execution could support the positive effects of standard therapies. In this paper we combine time-f ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Phase-based features for Motor Imagery Brain-Computer Interfaces

José del Rocio Millán Ruiz, Michele Tavella, Robert Leeb, Benjamin Hamner

Motor imagery (MI) brain-computer interfaces (BCIs) translate a subject’s motor intention to a command signal. Most MI BCIs use power features in the mu or beta rhythms, while several results have been reported using a measure of phase synchrony, the phase ...

IEEE2011

EEG Microstates for BCI Therapist Feedback: Preliminary Results on a Stroke Patient

Ricardo Andres Chavarriaga Lozano, José del Rocio Millán Ruiz, Hesam Sagha, Robert Leeb, Andrea Biasiucci

Brain-Computer Interfaces convey a great potential in the field of stroke rehabilitation, where the continuous monitoring of the execution of mental tasks could support the positive effects of the therapy by reinforcing specific mental patterns. We propose ...

2011

Evidence Accumulation in asynchronous BCI

José del Rocio Millán Ruiz, Hamidreza Bayati, Serafeim Perdikis, Robert Leeb

The non-invasive Brain-Computer Interface (BCI) developed in our lab targets asynchronous operation of devices by monitoring electroencephalographic (EEG) activity and identifying oscillatory patterns that the user can voluntary modulate through the execut ...

2011

Are we ready? Issues in transferring BCI technology from experts to users

José del Rocio Millán Ruiz, Luca Tonin, Michele Tavella, Serafeim Perdikis, Robert Leeb, Andrea Biasiucci, Tom Edward Carlson

Brain-Computer Interfaces (BCIs) are no longer only used by healthy subjects under control conditions in laboratory environments, but by patients controlling applications at their homes, without the BCI experts around. But are the technology and the field ...

Verlag der Technischen Universitaet Graz2011

Single trial detection of spatial covert visual attention for BCI

José del Rocio Millán Ruiz, Luca Tonin, Robert Leeb

This paper discusses a time-dependent classification approach for single trial recognition of spatial covert visual attention for Brain–Computer Interface. Covert visual attention is a natural and intuitive mental task that does not require any external st ...

2011

Tools for brain-computer interaction: a general concept for a hybrid BCI

José del Rocio Millán Ruiz, Luca Tonin, Michele Tavella, Robert Leeb

The aim of this work is to present the development of a hybrid Brain-Computer Interface (hBCI) which combines existing input devices with a BCI. Thereby, the BCI should be available if the user wishes to extend the types of inputs available to an assistive ...

Frontiers Research Foundation2011

The Role of Shared-Control in BCI-based Telepresence

José del Rocio Millán Ruiz, Luca Tonin, Michele Tavella, Serafeim Perdikis, Robert Leeb

This paper discusses and evaluates the role of shared control approach in a BCI-based telepresence framework. Driving a mobile device by using human brain signals might improve the quality of life of people suffering from severely physical disabilities. By ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

On The Road To A Neuroprosthetic Hand: A Novel Hand Grasp Orthosis Based on Functional Electrical Stimulation

José del Rocio Millán Ruiz, Michele Tavella, Heather Christine Klug, Robert Leeb, Miguel Joaquin Gubler

To patients who have lost the functionality of their hands as a result of a severe spinal cord injury or brain stroke, the development of new techniques for grasping is indispensable for reintegration and independency in daily life. Functional Electrical S ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Human-Computer Interface Issues in Controlling Virtual Reality With Brain-Computer Interface

Mel Slater, Robert Leeb

We have integrated the Graz brain-computer interface (BCI) system with a highly immersive virtual reality (VR) Cave-like system. This setting allows for a new type of experience, whereby participants can control a virtual world using imagery of movement. H ...

2010

Combining brain-computer interfaces and assistive technologies: state-of-the-art and challenges

José del Rocio Millán Ruiz, Robert Leeb

In recent years, new research has brought the field of electroencephalogram (EEG)-based brain–computer interfacing (BCI) out of its infancy and into a phase of relative maturity through many demonstrated prototypes such as brain-controlled wheelchairs, key ...

2010

Multimodal Fusion of Muscle and Brain Signals for a Hybrid-BCI

Ricardo Andres Chavarriaga Lozano, José del Rocio Millán Ruiz, Hesam Sagha, Robert Leeb

Practical Brain-Computer Interfaces (BCIs) for disabled people should allow them to use all their remaining functionalities as control possibilities. Sometimes these people have residual activity of their muscles, most likely in the morning when they are n ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Towards Natural Non-Invasive Hand Neuroprostheses for Daily Living

José del Rocio Millán Ruiz, Michele Tavella, Robert Leeb

In this paper we show how healthy subjects can operate a non-invasive asynchronous BCI for controlling a FES neuroprosthesis and manipulate objects to carry out daily tasks in ecological conditions. Both, experienced and novel subjects proved to be able to ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

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