Cognitive Maps Exploration trough Kernel Density Estimation

Antoine Lhuillier 1 Christophe Hurter 1, 2 Hélène Amieva 3 Emmanuel J Barbeau 4 Christophe Jouffrais 2, 5, 6
1 LII - ENAC - Laboratoire d'Informatique Interactive
2 IRIT - Institut de recherche en informatique de Toulouse
3 BPH - Bordeaux population health
4 CERCO - Centre de recherche cerveau et cognition
5 CNRS - Centre National de la Recherche Scientifique
6 UT3 - Université Toulouse III - Paul Sabatier
Abstract : Currently approximately 860,000 people are affected by Alzheimer’s disease in France. This is why the study of Alzheimer’s disease has been identified as a major societal challenge. In the PAQUID cohort study, subjects performed a lexical evocation task by saying the maximum number of city names within 3 minutes. This task is directly related to the concept of cognitive map. The analysis of the list created by this task provides a unique opportunity to study the spatial mental representation of geographical space for elderly people before and after developing the dementia. We visualized graphs of this list by connecting cited city with a line. Since these graphs become cluttered with numerous lines, we applied the KDEEB bundling technique. We then compared graphs representing different periods before and after dementia. Our first results show that graph complexity is related to aging, as well as the clinical status of the subject. The ultimate goal of the project is to develop techniques and tools to study the cognitive maps of elderly subjects in the years preceding Alzheimer’s disease. The tools that will be developed shall rely on image based technique (e.g. bundling) and help to better detect and understand the evolution of Alzheimer’s disease.
Keywords : Alzheimer ' s disease PAQUID Cognitive maps Bundling Large data visualization
Document type :
Conference papers
Complete list of metadatas

Cited literature [9 references]  Display  Hide  Download
https://hal-enac.archives-ouvertes.fr/hal-01522067
Contributor : Antoine Lhuillier <>
Submitted on : Friday, May 12, 2017 - 5:31:20 PM
Last modification on : Friday, January 10, 2020 - 9:10:02 PM
Long-term archiving on: Sunday, August 13, 2017 - 1:16:53 PM

File

cognitive_maps.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01522067, version 1

Collections

ENAC | CNRS | SMS | UNIV-TLSE2 | UNIV-TLSE3 | LII | UT1-CAPITOLE | RPAS

Citation

Antoine Lhuillier, Christophe Hurter, Hélène Amieva, Emmanuel J Barbeau, Christophe Jouffrais. Cognitive Maps Exploration trough Kernel Density Estimation. EHRVis - Visualizing Electronic Health Record Data. IEEE VIS Workshop 2014, Nov 2014, Paris, France. ⟨hal-01522067⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

238

Files downloads

112