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Cerebellum: Anatomical Regions

Cerebellum: Anatomical Regions

The cerebellum, also known as the "little brain," is located in the posterior cranial fossa, inferior to the tentorium cerebelli and dorsal to the brainstem. It plays a significant role in motor control, coordination, and proprioception.
Cerebellar Structure
Externally, the cerebellum features a highly convoluted surface with numerous folia (narrow ridges) separated by shallow sulci (grooves). The cerebellum is divided into two hemispheres by a thin median structure known as the vermis....

Cerebrum: Anatomical Overview II

Cerebrum: Anatomical Overview II

Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...

Role of Cerebellum and Prefrontal Cortex in Memory

Role of Cerebellum and Prefrontal Cortex in Memory

The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...

Association Areas of the Cortex

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...

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Related Experiment Video

Updated: May 23, 2025

Cerebellar Regional Dissection for Molecular Analysis

Cerebellar Regional Dissection for Molecular Analysis

Published on: December 5, 2020

Computational anatomy: the cerebellar microzone computation.

Mike Gilbert¹, Anders Rasmussen²

¹School of Psychology, College of Life and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom.

Oxford Open Neuroscience

|May 22, 2025

Summary

This summary is machine-generated.

The cerebellum

Keywords:

anatomy cerebellum code computation microzone model network theory

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Published on: December 14, 2015

Area of Science:

Neuroscience
Computational Neuroscience
Neuroanatomy

Background:

The cerebellum, a major brain structure, features a cortex divided into functional microzones.
Traditional models propose learned synaptic changes for cerebellar data processing.
This conflicts with evidence of linear information conservation in cerebellar signaling.

Purpose of the Study:

To propose an alternative model for cerebellar microzone computation.
To investigate the role of anatomy and passive effects in cerebellar processing.
To reconcile cerebellar function with linear signaling principles.

Main Methods:

Computational modeling (in silico recreation) of cerebellar microzone function.
Analysis of cell morphologies and network architecture.
Interpretation of findings in the context of linear communication.

Main Results:

Cerebellar microzone computation can be explained as an aggregate of simple unit computations and passive anatomical effects.
A computational model successfully recreated this passive computation.
Linear communication principles are supported by the proposed model.

Conclusions:

Cerebellar microzone computation may not solely rely on learned synaptic changes.
Anatomical structure and passive effects play a significant role.
Parallel fiber synaptic memory acts in a supporting role within the network.