Anthony & Jesse

From Psych 221 Image Systems Engineering
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Background

What is Retinotopy?

Early visual areas are organized by a principle known as retinotopy. The basic idea behind this organization principle is that stimulation of adjacent regions of the visual field activate adjacent locations on the cortical surface, and specific locations in these areas respond to stimulation in particular parts of the visual field. In addition, the organization of preference for particular locations in the visual field is highly consistent across individuals and can be mapped with fMRI.


Discovery of Visual Field Maps

Beyond V1

Polar Angle and Eccentricity Bias

Beyond the Occipital Lobe

Methods for Mapping Visual Cortex

Traveling Wave Analysis

Population Receptive Field (pRF) Analysis

Methods

Subjects & MR Processing

Defining Occipital Field Maps

PRF & Traveling Wave Model Fits

Results

Eccentricity

Visual Field Maps

Conclusions

References