types of visual agnosia lgn of thalamus retina occipital cortex surrounding visual cortex mesial...

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Types of Visual Agnosia LGN of Thalamus Retina Occipital Cortex Surrounding Visual Cortex Mesial Temporal Subcortex Inability to access memory associative agnosia Inability to integrate Features apperceptive Agnosia or simultagnosia Recognition Top Down Perceptual Processing Bottom up Perceptual Processing

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Page 1: Types of Visual Agnosia LGN of Thalamus Retina Occipital Cortex Surrounding Visual Cortex Mesial Temporal Subcortex Inability to access memory associative

Types of Visual Agnosia

LGN ofThalamus

Retina

OccipitalCortex

SurroundingVisual Cortex

MesialTemporalSubcortex

Inabilityto accessmemory

associativeagnosia

Inabilityto integrate

Featuresapperceptive Agnosia or

simultagnosia

Recognition

Top DownPerceptualProcessing

Bottom upPerceptualProcessing

Page 2: Types of Visual Agnosia LGN of Thalamus Retina Occipital Cortex Surrounding Visual Cortex Mesial Temporal Subcortex Inability to access memory associative

Lexical recognition disorders

dog

Motor Planning

/dawg/

/ahg/

dog

/d/

og

d

Decision stage

/dawg/ /d/ /ahg/

d og

c

e

a

b

d

d

Deep dyslexia: c,(e)Alexia: a,c,(e)Agraphia: dWord deafness: b

Page 3: Types of Visual Agnosia LGN of Thalamus Retina Occipital Cortex Surrounding Visual Cortex Mesial Temporal Subcortex Inability to access memory associative

Summary Comparison between representation of

perceptual input and representations in memory Redundant pathways increase probability of match

Response includes multiple associated representations Priming, agnosia, and apraxia provide evidence of

specific pathways and associations Selection of context-appropriate

representation occurs in working memory Orients you to place

Model of visual cortex

Texture segregation by visual cortex: Perceptual grouping ...techlab.bu.edu/files/resources/articles_cns/bhatt_carpenter_grossberg2007.pdfTexture segregation by visual cortex: Perceptual

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The Visual Cortex: Anatomy The LGN projects to ipsilateral primary visual cortex (area 17, striate cortex). Remember that this means that left visual field

The Human Visual System Short Overview. Terms: LGN, cortex, primary visual cortex, V1

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Texture segregation by visual cortex:

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Anatomy of the visual pathways and visual cortex

Retinotopic Organization of Human Visual Cortex Mapped

Deep learning in the visual cortex

Organization of Human Visual Cortex

Cerebral Cortex April 2015;25:1080 …...Keywords: fMRI, fusiform face area, human visual cortex, multivariate pattern analysis, parahippocampal place area, visual attention Introduction

Gabor Filter: A model of visual processing in primary visual cortex (V1)

4. the Primary Visual Cortex

Visual motion induces synchronous oscillations in turtle visual cortex

Visual Cortex Extrastriate Body-Selective Area Activation ...brain.huji.ac.il/publications/Ella_Amir_CB_EBA_2014.pdf · Visual Cortex Extrastriate Body-Selective Area Activation in

Modeling spatial patterns in the visual cortex

Selective rearing Visual cortex and beyond

Electrical Stimulation of Visual Cortex: Relevance for the … · Annual Review of Vision Science Electrical Stimulation of Visual Cortex: Relevance for the Development of Visual

Cortex: Cingulate Gyrus, Precentral Gyrus, Postcentral Gyrus, Primary Visual Cortex

Hierarchy of visual cortex models

Spatial Frequency Maps in Cat Visual Cortex

Patterns of individual variation in visual pathway ...€¦ · 23/07/2016 · 42 hemispheres of the visual cortex [5]. While the surface area of primary visual cortex is reduced

Receptive Field Dynamics in Adult Primary Visual Cortex

5. THE ARCHITECTURE OF THE VISUAL CORTEXhubel.med.harvard.edu/book/ch5.pdfTHE ARCHITECTURE OF THE VISUAL CORTEX The primary visual, ... occipital lobe of the cortex, the area that