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Valorisation

IMAGE PROCESSING SYSTEM

Spikenet The experimental work on object and scene perception has led to the development of a bio-inspired image processing system that models the functions of the visual system.

  • The potential of the system led three members of the CerCO (Simon Thorpe, Rufin VanRullen and Arnaud Delorme) to create Spikenet Technology, a high-tech spin-off company in 1999 .
  • Applications of SpikeNet include the detection of logos in television broadcasts of sporting events, the counting of people and vehicles, and the analysis of satellite images

The development of a system that will allow visually handicapped people to recognize and localise objects is currently under way in collaboration with the Institute de Recherche en Informatique de Toulouse - IRIT - DIAMANT team (project leader Christophe Jouffrais). After object recognition, object localization is achieved by the substitution of a 3D visual space by a 3D auditory space

HEARING RECOVERY IN COCHLEAR IMPLANTED PATIENTS



Valorisation themes at CerCo also include studies on hearing recovery in cochlear implanted patients, mainly in the fields of speech discrimination and musical perception. These studies are done in collaboration with the Department of Otology and Neurotology (Hôpital Purpan - CHU Toulouse), and the U455 lab of INSERM (Institut National de la Santé et de la Recherche Médicale). The researches are related to :

  • evolution of speech perception in unilateral cochlear implanted patient, and implication of visual information (lipreading) in this perception
  • implication of visuo-auditory systems in unilateral and bilateral cochlear implanted patients by Positron Emission Tomography (PET), in order to evaluate the different patterns of speech discrimination in uni and bilaterally implanted patients
  • mechanisms of music perception in cochlear implanted patients combined effects of electro-acoustic stimulation after soft surgery with respect of residual hearing in cochlear implanted patients.

The studies are done in collaboration with the leading cochlear implant societies :

PROCESS ELECTROENCEPHALOGRAPHY DATA

EEGLABEEGLAB EEGLAB is a project developed in collaboration between the CerCo laboratory at the Paul Sabatier University in Toulouse and the Swartz Center for Computational Neuroscience at the University of California San Diego in the United States. EEGLAB includes over 50,000 lines of program and 400 pages of documentation. Researchers from at least 88 countries have downloaded the software (a total of over 60,000 downloads). Finally over 6000 researchers have subscribed to the mailing list, and 212 scientific articles are referencing the original EEGLAB publication of 2004 (Delorme and Makeig 2004). To date, 12 EEGLAB workshops have been organized including 3 workshops involving more than 100 participants. Two workshops were organized by the CerCo laboratory in the Midi-Pyrenees region in 2007 and 2009 with another workshop planned for June 2011. Other workshops were held in the United States, Chile, Singapore, Finland, and Australia. EEGLAB is currently the most popular publicly available software to process electroencephalography data.

DIAGNOSTIC APPLICATIONS

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DMS 48

A series of studies on visual recognition memory has allowed identifying the brain regions involved in a fundamental cognitive ability : the ability to tell that a given stimulus, an object or a face, has previously been encountered ("this face is familiar" for example). The brain area critical for this ability is the perirhinal cortex. One of the two type of lesions characteristic of Alzheimer’s disease, neurofibrillary tangles, start precisely by this region. The DMS48, a visual recognition memory neuropsychological test, was thus designed to assess precisely the functional intergrity of this region. A series of neuropsychological and neuroimaging studies carried out in collaboration with the CHU Timone in Marseille has shown that patients with incipient Alzheimer’s disease indeed have difficulties on the DMS48. This test is now largely used in memory centers in France and abroad.

Mise à jour 28/02/2011