BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//wp-events-plugin.com//6.4.7.2//EN
TZID:Europe/Paris
X-WR-TIMEZONE:Europe/Paris
BEGIN:VEVENT
UID:0-571@lptms.universite-paris-saclay.fr
DTSTART:20180321T110000Z
DTEND:20180321T120000Z
DTSTAMP:20180307T124730Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/physics-biology-i
 nterface-seminar-ulisse-ferrari/
SUMMARY:Physics-Biology interface seminar: Ulisse Ferrari - Moyen Amphi\, B
 uilding 510\, Université Paris-Saclay Orsay - 21 Mar 18 11:00
DESCRIPTION:Non-linear stimulus processing by the retina\nUlisse Ferrari (I
 nstitut de la Vision\, Paris)\nUnderstanding how sensory systems process i
 nformation is an open challenge. This is mostly because these systems are 
 non-linear\, making it extremely difficult to model the relation between t
 he stimulus and the sensory response. In this talk I will discuss two stra
 tegies to tackle this problem and apply them to the retina.\nFirst\, we us
 e ex-vivo multi-electrode array experiments to record the retinal activity
  and directly model the ganglion cell response to complex stimuli\, such a
 s videos of moving objects. Here I will show that standard\, nearly-linear
 \, models are not enough and highly non-linear models are required. Then I
  will present the result of a closed-loop experiment where we adapted the 
 stimulus on-line to investigate how the response changes when the visual s
 timulation is perturbed.\nWith this approach we could estimate the optimal
  performance of a neural decoder and show that the non-linear sensitivity 
 of the retina is consistent with an efficient encoding of stimulus informa
 tion.\nReferences:\n-) U. Ferrari\, C. Gardella\, T. Mora\, O. Marre. eNeu
 ro\, vol. 4\, 6. 2017.\n-) S. Deny\, U. Ferrari\, P. Yger\, R. Caplette\, 
 S. Picaud\, G. Tkacik\, O. Marre\, Nature Commun. 8 (1) 2017\n
CATEGORIES:physbio,seminars
LOCATION:Moyen Amphi\, Building 510\, Université Paris-Saclay Orsay\, 15 R
 ue Georges Clemenceau\, orsay\, France
GEO:48.698187;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  orsay\, France;X-APPLE-RADIUS=100;X-TITLE=Moyen Amphi\, Building 510\, Un
 iversité Paris-Saclay Orsay:geo:48.698187,2.181768
END:VEVENT
END:VCALENDAR