COURS 4 - PT Flashcards

organisation fonctionnelle

1
Q

Trajetoire oblique VS perpendiculaire :

  • Dans CGL ?
  • Dans V1, selon types colonnes ?
A

V1 :

PERPENDICULAIRE = MÊME/PAREIL
OBLIQUE = DIFF./CHANGEMENT
= localisation prefs, orientations prefs, dominance oculaire prefs!

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2
Q

TYPES COLONNES NEURONALES (V1)

A

**En gros, on croise neurones ayant champs récepteurs avec préférence pour différents (ou mêmes) :

1) LOCALISATION

2) ORIENTATION

3) DOMINANCE OCULAIRE

4) HYPERCOLONNE = local + orient + D.O.
*1mm2,
*Magnification corticale

5) BLOB (absorbe CO x4/H) = couleurs
Inter-blobs = mvt/forme

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3
Q

Magnification corticolee (déf + où?)

A

1) dans carte rétinotopique de V1

2) Dans hypercolonnees de V1

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4
Q

Aire pour sélectivité couleur?

A

V4

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5
Q

Aire pour sélectivité mvt?

A

MT

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6
Q

Aire pour sélectivité forme?

A

IT

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7
Q

Aire = perception visagees

A

FFA (gurys fusiforme)

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8
Q

Aire = perception liux batiments

A

(PPA) = Gyrus hippocampique des lieux

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9
Q

Aire = perception partie du corps

A

EBA : extra-strie du corps

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10
Q

AIRE MT = ? (+ Tâche et resultats)

A

MOUVEMENT
Tachement de mvt global (lésion = diminution seuil perception)
Singe = 1-2% à 10-20%…

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11
Q

AIRE IT = ? (types neurones de IT)

A

FORMES
Nuerones IT > Neuronees V1
= formes complexes!! (cellulaires primaire & cellules élaborées)

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12
Q

2 TYPES ENCODAGES SENSORIELS

A
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13
Q

2 voies de traitement

A

M -VOP - (DORSALE) = action/local/mvt
P - VOT - (VENTRALE) = couleur, forme reconn objets

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14
Q

COLONNES NEURONALES )CGL)

A

IPSI vs CONTRO = « Ci iCiC »
MAGNO = +gros/vite = + sensibilité / - acuité (rép. transitoire)
PARVO = +petit/lent = - sensibilité / + acuité (rep. soutenue)

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