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Related Experiment Video

Updated: Jul 11, 2026

Assessing Dyslexia at Six Year of Age

Assessing Dyslexia at Six Year of Age

Published on: May 1, 2020

Over-inhibition: a model for developmental intellectual disability.

Fabian Fernandez¹, Craig C Garner

¹Department of Psychiatry and Behavioral Sciences, Nancy Pritzker Laboratory, Stanford University, 1201 Welch Rd, Palo Alto, CA 94304-5485, USA.

Trends in Neurosciences

|September 11, 2007

Summary

Developmental intellectual disability (DID) may stem from over-inhibited neural circuits, impairing learning and memory. Therapeutic neuroadaptation offers a potential strategy to enhance brain function and cognition in DID patients.

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Area of Science:

Neuroscience
Genetics
Pharmacology

Background:

Developmental intellectual disability (DID) presents a significant societal challenge with limited therapeutic options.
Genetic causes of DID are increasingly understood, but effective treatments for cognitive impairments are lacking.
A unified therapeutic approach for cognitive deficits in DID is notably absent.

Purpose of the Study:

To propose a unifying hypothesis for cognitive impairments in DID.
To explore the potential of pharmacological interventions for DID.
To introduce the concept of therapeutic neuroadaptation for DID.

Main Methods:

Review of current understanding of DID genetics and neurobiology.
Hypothesizing the role of neuronal activity imbalance (over-inhibition) in DID.
Discussion of pharmacological strategies targeting circuit excitability.

Main Results:

Neuronal over-inhibition is hypothesized as a core issue in many DID-related disorders.
This over-inhibition is linked to deficits in synaptic plasticity, learning, and memory.
Drug-induced therapeutic neuroadaptation is proposed as a method to enhance cognition.

Conclusions:

Addressing neuronal over-inhibition may be key to treating DID.
Pharmacological interventions aiming for stable enhancement of circuit excitability hold promise.
Therapeutic neuroadaptation offers a novel strategy for improving cognitive function in DID.