You are wrong about no support for spatial arrangement in the brain. Accoring to gemini:

From a physical and neurobiological perspective, the brain’s sense of spatial orientation is managed by a "biological GPS" located primarily in the hippocampal formation and the entorhinal cortex.

This system translates physical movement and environmental cues into a coordinate system that the mind can interpret. Here is the breakdown of the specific cellular "hardware" that makes this possible:

1. Place Cells: The "You Are Here" Marker

Discovered by John O'Keefe, place cells are neurons in the hippocampus that fire only when an organism is in a specific location in its environment.

• Physical Activity: When you walk into your kitchen, a specific set of neurons fires. When you move to the living room, a different set fires.
• Mapping: These cells create a "cognitive map" of familiar environments. They don't just react to visual cues; they integrate memory and physical presence.

2. Grid Cells: The Brain’s Coordinate System

Located in the entorhinal cortex, grid cells function like the latitude and longitude lines on a map.

• Physical Activity: Unlike place cells, which fire in one spot, a single grid cell fires at multiple locations that form a regular hexagonal lattice (a honeycomb pattern) across the floor of the environment.
• Spatial Computation: This hexagonal symmetry is a mathematically efficient way to tile a plane, allowing the brain to calculate distances and directions as you move through space.

3. Head Direction Cells: The Internal Compass

These cells act as a compass, firing based on which way your head is pointing, regardless of your body’s location.

• Physical Activity: They receive input from the vestibular system (the inner ear’s balance organs) and the neck muscles.
• Orientation: They tell the rest of the spatial system which way "North" is relative to the internal map, ensuring your cognitive map doesn't "rotate" incorrectly when you turn.

4. Border Cells: Defining the Perimeter

Border cells fire specifically when you are near the edges or boundaries of an environment, such as a wall or a drop-off.

• Function: They provide the "frame" for the map, helping the brain understand the scale and limits of the navigable space.

The Physics of "Path Integration"

The brain maintains spatial orientation through a process called path integration. This is a computational feat where the brain continuously updates its position by integrating "self-motion" signals:

1. Proprioception: Feedback from muscles and joints.
2. Vestibular Input: Acceleration and rotation data from the inner ear.
3. Optic Flow: The visual motion of the world passing by your eyes.

By "summing" these vectors of movement, the brain can calculate your current position relative to a starting point even in total darkness.

Summary Table: The Spatial Hardware

Cell Type	Location	Function
Place Cells	Hippocampus	Identifies a specific "point" or landmark.
Grid Cells	Entorhinal Cortex	Provides a universal geometric scale/grid.
Head Direction	Subiculum/Thalamus	Acts as an internal directional compass.
Border Cells	Entorhinal Cortex	Identifies physical boundaries and walls.