Function-Structure Integration:Retinotopy

What does your brain do to Mona?

Left CorticalHemisphere

Right CorticaHemisphere

HM

VML

VMU

HM – Horizontal Meridian

VML – Vertical Meridian, Lower Field

VMU – Vertical Meridian, Upper Field

CortexCartesianMap Function

log(k(x+iy)+a)

V1 – Primary Visual Cortex

HM

VMU

VML

V1 (Non-Mirrored)

V2+ (Mirrored)

VP+ (Non-Mirrored)

V2- (Mirrored)

V3 (Non-Mirrored)

Cortex

Cartesian

V1 (Non-Mirrored)

V2v (Mirrored)

V3v (Non-Mirrored)

V2d (Mirrored)

V3d (Non-Mirrored)

Field Sign Map:Sign of Determinant of Map Function

A

B

+

+

AA

BB

+

+

A

B

+

+

AA

BB

+

+

Retinotopic fMRI

Ring (Exp/Con)(Eccentricity)

Wedge (Rot)(Azimuth)

Retinotopic fMRI Analysis

1=Asin() 2=Acos()

tan (1/2)-1

A

B

+

+

AA

BB

+

+

Eccentricity

EccentricityA.1

AzimuthB.1

Mirror

Non-Mirror

Field SignD.1

Azimuth

Eccentricity

IsoclinesC.1

EccentricityA.2

inferior

lateral

med

ial

dorsal

*

AzimuthB.2

*

AzimuthEccentricity

IsoclinesC.2

**

Mirror

Non-MirrorField Sign

D.2

*

A

B

+

+

AA

BB

+

+