Related Experiment Video
Updated: Jul 10, 2025

Author Spotlight: Deciphering the Cognitive and Neural Mechanisms of Gesture in Communication
Published on: January 26, 2024
Interhemispheric Communication in Down Syndrome
Massimo Piccirilli1, Patrizia D'Alessandro, Sandro Elisei
1Department of Medicine, University of Perugia, Via Sicilia 39, 06128 Perugia, Italy, massimo.piccirilli@gmail.com.
Background:
Within the domain of intellectual disability, evidence suggests a potential association with changes in the developmental pathways governing the maturation of interhemispheric communication mechanisms.
Subjects And Method:
Through this study, our objective was to identify potential anomalies in interhemispheric transfer among individuals with Down syndrome (DS). Specifically, we investigated whether a significant difference exists in interhemispheric communication efficiency between DS and control participants of similar chronological age. For our analysis, 11 participants with DS and 13 from the control group were evaluated. A fingertip cross-localization test was used to quantify the efficiency of interhemispheric information transfer.
Results:
The data revealed a significantly reduced efficiency of interhemispheric communication in participants diagnosed with DS compared to the control group.
Conclusions:
These findings suggest a potential dysfunction in the corpus callosum of DS individuals. It is plausible to suggest that this functional disconnection might influence the development of cognitive anomalies.
Related Concept Videos
Cerebral Hemispheres
Lateralization
Autism Spectrum Disorder
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
Language and Cognition
Meiosis I
Higher Mental Functions of the Brain: Language
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...

