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Related Experiment Video

Updated: Sep 24, 2025

Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex

Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex

Published on: March 28, 2012

Phase coding of spatial representations in the human entorhinal cortex.

Zoltan Nadasdy^1,2,3, Daniel H P Howell^2,4, Ágoston Török⁵

¹Zeto Inc., Santa Clara, CA 95054, USA.

Science Advances

|May 4, 2022

Summary

This summary is machine-generated.

Human entorhinal cortex neurons use spike timing relative to gamma oscillations to create spatial maps for navigation. This neural code accurately predicts location and heading during virtual reality tasks.

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Last Updated: Sep 24, 2025

Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex

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Published on: May 23, 2025

Area of Science:

Neuroscience
Cognitive Science
Computational Neuroscience

Background:

The entorhinal cortex is crucial for spatial navigation and memory.
Grid-like cell activity in the entorhinal cortex forms an internal reference frame for self-localization.
Neurons in this area exhibit phase coupling with local field oscillations.

Purpose of the Study:

To investigate the role of spike timing relative to local field potentials in human entorhinal cortex during spatial navigation.
To determine if phase locking encodes spatial information and forms environment-specific maps.
To assess the predictive power of this neural code for position and heading.

Main Methods:

Recording neural activity from the human entorhinal cortex during virtual navigation.
Analyzing spike timing and phase locking with slow gamma band local field potentials (LFPs).
Utilizing a Bayesian decoding model to predict avatar position and heading direction.

Main Results:

Neurons showed consistent spatial and temporal phase locking between spikes and slow gamma LFPs.
Phase locking created environment-specific spatial maps that were stable over time.
Spatially periodic phase grids were observed, with environment-dependent scaling and alignment.
A Bayesian decoding model achieved high accuracy in predicting the avatar's position and heading.

Conclusions:

The phase of neuronal spikes relative to gamma oscillations encodes allocentric spatial positions in humans.
A joint spatiotemporal phase code may underlie the neural representation of space and time in the entorhinal cortex.
This finding offers insights into the neural mechanisms of human navigation and spatial cognition.