⌛️1st case
"On late of 80's A man saw his wife as hat 🎩"
Discovered this case by Dr.Oliver Sacks
📝...
"On late of 80's A man saw his wife as hat 🎩"
Discovered this case by Dr.Oliver Sacks
📝...
Normal Pathway of Vision Recognition:🚧
Step 1️⃣: V1
The image will travel from Optic Pathway, to 1ry visual cortex " V1"
🟰 V1 is a receiver of what eye has seen.
↓
Step 2️⃣: V2-V3 "Early higher level processing"
🟰Ability to see the shapes without recognizing the meaning
📝
Step 1️⃣: V1
The image will travel from Optic Pathway, to 1ry visual cortex " V1"
🟰 V1 is a receiver of what eye has seen.
↓
Step 2️⃣: V2-V3 "Early higher level processing"
🟰Ability to see the shapes without recognizing the meaning
📝
Step 3️⃣: V4-V5 " Late higher level processing "
🟰 Recognizing the meaning of shapes and moving object.
🧠 It area of ventral VS Dorsal visual stream. " WHAT & WHERE Systems"
📝...
🟰 Recognizing the meaning of shapes and moving object.
🧠 It area of ventral VS Dorsal visual stream. " WHAT & WHERE Systems"
📝...
Visual agnosia :
📖
Definition : " Impairment in recognizing and understanding the meaning of visual objects, with normal visual field, acuity, color vision, language, and memory"
📝...
📖
Definition : " Impairment in recognizing and understanding the meaning of visual objects, with normal visual field, acuity, color vision, language, and memory"
📝...
Types & Localization:
🔺 Apperceptive visual agnosia:
Localization : Defect on V2-V3 area
Explanation : The patient can't copy or draw the Exact images that already received by V1
📝...
🔺 Apperceptive visual agnosia:
Localization : Defect on V2-V3 area
Explanation : The patient can't copy or draw the Exact images that already received by V1
📝...
🔺Associative Visual agnosia
Localization : Defect on V4 area
Explanation : The patient can copy and draw the Exact images that already received by V2-V3 , BUT he doesn't recognize or understand the meaning of object .
📝...
Localization : Defect on V4 area
Explanation : The patient can copy and draw the Exact images that already received by V2-V3 , BUT he doesn't recognize or understand the meaning of object .
📝...
Loading suggestions...