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    AccueilProjets > DyCo > Anne-Lise Paradis
 
  DyCo: Dynamiques Cognitives / Cognitive Dynamics
 

  

PhD, born 1972

CRICM - UPMC / INSERM UMR-S975 / CNRS UMR7225
Equipe Cogimage (LENA)
47 bd de l'Hôpital, F - 75651 Paris cedex 13

tel: +33 (0)1 42 16 11 60, fax: +33 (0)1 45 86 25 37

email:  

To find my office, follow the instructions to "Labo principal", here!

Scientific Interests

 

3D perception from motion

Shape information can be accessed through many cues including motion. Using random dot kinetograms, we study the visual pathways involved in recovering shape information from motion cues only.  We also try to understand how 3D motion is built-up from 2D motion and where it is processed in the brain.

 Perceptual binding of motion

Extracting a 3D structure from motion cues also implies that the visual system integrate local speeds into the global motion of this 3D strucuture. Thus, 3D perception may be considered as particular case of perceptual binding. With Jean Lorenceau, we intend to elucidate binding mechanisms involved in the processing of motion and shape, in both 2D and 3D perception.  

 Motion and shape interactions in the  ventral and dorsal pathways

In a simplified description of the visual system, motion processing usually occurs in the dorsal pathway and supports object-directed actions, while static cues are processed in the ventral pathway yielding to shape recognition. When shape is recovered from motion cues only, such segregation does not hold anymore. Using situations where motion and shape are intricated (such as 3D structure from motion), we try to understand whether and how shape and motion processing interact at the perceptual, attentional and physiological levels (with Jean Lorenceau).

 Featural attention and perceptual awareness

Paying attention to one feature of an object enhances the activity in areas processing other features of the same object (O'Craven et al, 1999). Does it mean that the perception of these other features is enhanced ? With Catherine Tallon-Baudry, we investigate whether the neural correlates of featural attention and perceptual awareness can be dissociated experimentally.

Methods used

Magnetoencephalography (MEG):  Event-related magnetic fields and source reconstruction

Magnetic Resonance Imaging (fMRI)

Psychophysics


Teaching

How protocol design depends on the imaging techniques and data-analysis methods used.

Curriculum Vitae

  Posts held

2009 – onwards : CNRS research scientist, member of the Cogimage group, Centre de Recherche de l’Institut du Cerveau et de la Moëlle épinière (cricm), Paris

2006 – 2008 : CNRS research scientist at the Laboratoire de Neurosciences Cognitives et Imagerie Cérébrale (LENA), équipe Liages Dynamiques, Paris

2001 – 2005 : research scientist at the Laboratoire de Physiologie de la Perception et de l'Action (LPPA), Paris

2000 – 2001 : "Berthe Fouassier" grant of neuro-ophtalmology (from la Fondation de France),
Post-Doctoral fellow funded by INRIA (projet ARC "MC2"), Centre MEG - Pitié-Salpêtrière, Paris

févr-mars 2001 : Inserm U483, Paris

1995 – 1999 : Stage puis contrat de formation par la recherche CEA sur l’exploration des bases neurales de la perception 3D à partir du mouvement visuel en IRM fonctionnelle, Service Hospitalier Frédéric Joliot – CEA, Orsay - collaboration avec le LPPA

Education

1996 – 2001 : PhD in Cognitive Science, Université Paris 6

1996 – 1999 : Formation Supérieure Biomédicale (IFSBM), Université Paris-Sud 11

1995 – 1996 : DEA de Sciences Cognitives, Paris 6, EHESS, ENS et école Polytechnique. Spécialisation en neurosciences computationnelles

1992 – 1995 : École Nationale Supérieure des Télécommunications de Paris (ENST). Option ‘Traitement des Images’.

Publication list

 

Papers

Miskiewicz A, Buffat S, Paradis A-L & Lorenceau J. Shape and motion interactions at perceptual and attentional levels during processing of structure from motion stimuli. Journal of Vision, 8(16):17, 1-14, http://journalofvision.org/8/16/17/ (2008) [Pubmed]

Paradis A-L, Droulez J, Cornilleau-Pérès V & Poline J-B. Processing 3D form and 3D motion: Respective contributions of attention-based and stimulus-driven activity. Neuroimage 43(4): 736-747 (2008) [Pubmed]

G.Committeri, G.Galati, A.-L.Paradis, L.Pizzamiglio, A.Berthoz, & D.Le Bihan. Reference Frames for Spatial Cognition: Different Brain Areas are Involved in Viewer-, Object-, and Landmark-Centered Judgements About Object Location. J Cogn Neurosci 16:1517-1535 (2004)

H. Mouras, S. Stoleru, J. Bittoun, D. Glutron, M. Pelegrini-Issac, A.-L. Paradis & Y. Burnod. Brain Processing of Visual Sexual Stimuli in Healthy Men: a Functional Magnetic Resonance Imaging Study. Neuroimage 20(2): 855-869 (2003)

A. Andrade, F. Kherif, J.-F. Mangin, K.J. Worsley, A.-L. Paradis, O. Simon, S. Dehaene, D. Le Bihan and J.-B. Poline. Detection of fMRI activation using cortical surface mapping. Hum Brain Mapp 12: 79-93 (2001)

A.-L. Paradis, P.-F. Van de Moortele, D. Le Bihan, J.-B. Poline. Slice acquisition order and BOLD frequency content: an event-related functional magnetic resonance imaging study. Magma 13(2) : 91-100 (2001) [Pubmed]

I. Klein, A.-L. Paradis, S. Kosslyn, J.-B. Poline, D. Le Bihan. Transient activity in human striate cortex during visual imagery: an event-related fMRI study. J Neurophysiol (2000)

A.-L. Paradis, V. Cornilleau-Pérès, J. Droulez, P.-F. Van de Moortele, E. Lobel, A. Berthoz, D. Le Bihan, J.-B. Poline. Visual perception of motion and 3D structure from motion: an fMRI study. Cerebral Cortex (2000) [Pubmed]

A. Andrade, A.-L. Paradis, S. Rouquette, J.-B. Poline. Ambiguous results in functional neuroimaging data analysis due to covariate correlation. Neuroimage 10(4): 483-6 (1999)

S. Lehéricy, P.-F. Van de Moortele, E. Lobel, A.-L. Paradis, M. Vidailhet, V. Frouin, P. Neveu, Y. Agid, C. Marsault, D. LeBihan. Somatotopical organization of striatal activation during finger and toe movement : a 3-T functional magnetic resonance imaging study. Ann Neurol 44(3): 398-404(1998)

P.-F. Van de Moortele, B. Cerf, E. Lobel, A.-L. Paradis, A. Faurion, D. Le Bihan. Latencies in fMRI time-series: effect of slice acquisition order and perception. NMR Biomed 10(4-5):230-6 (1997)

Book chapter

V. Cornilleau-Pérès, A.-L. Paradis, J. Droulez. Visual Perception of 3D shape from motion: multisensory integration and cortical bases in: Vision and Action, L.R. Harris and M. Jenkins (Eds.) Cambridge University Press, pp 231-249 (1998)

Thèse / PhD thesis

Exploration par IRM fonctionnelle de la perception visuelle des formes tridimensionnelles; dessin de paradigmes d'acquisition et outils d'analyse appliqués au domaine de la vision, Université Paris 6 (2001) [résumé / abstract]
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