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Related Experiment Video

Updated: Jul 27, 2025

Cross-Modal Multivariate Pattern Analysis

Cross-Modal Multivariate Pattern Analysis

Published on: November 9, 2011

A retinotopic code structures the interaction between perception and memory systems.

Adam Steel¹, Edward H Silson², Brenda D Garcia¹

¹Department of Psychology and Brain Sciences, Dartmouth College, Hanover, NH, 03755.

Biorxiv : the Preprint Server for Biology

|June 9, 2023

Summary

This summary is machine-generated.

Retinotopic coding at the brain's apex organizes memory and perception. This neural code links internally-oriented memory and externally-oriented perception through opposing signals.

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Area of Science:

Neuroscience
Cognitive Neuroscience
Neuroimaging

Background:

Conventional models posit abstract coding at the cortical apex for internal information.
Emerging evidence suggests retinotopic coding extends to the cortical apex, including default mode network regions.

Approach:

Utilized functional magnetic resonance imaging (fMRI) to investigate retinotopic coding at the cortical apex.
Examined the functional linkage between retinotopic coding in memory and perceptual areas.

Key Points:

Observed robust, inverted retinotopic coding in category-selective memory areas at the cortical apex.
Identified a functional link between this inverted coding and positive retinotopic coding in visual perceptual areas.
Demonstrated spatially-specific, opponent responses in mnemonic and perceptual areas during perception and recall.

Conclusions:

Retinotopic coding at the cortical apex structures interactions between mnemonic and perceptual brain systems.
These systems engage in a mutually-inhibitory dynamic, mediated by retinotopic signals.
Retinotopic coding plays a crucial role in scaffolding the dynamic interplay between perception and memory.