Menu

Researchers Identify Gene Variants Linked to Synesthesia

A whole-genome analysis of people who experience color when they listen to sounds points to a handful of genes involved in neural development.

Mar 6, 2018
Catherine Offord

PIXABAY, GERALTSynesthesia, the linking of two or more separate senses such as taste and hearing, is thought to arise from hyperconnectivity in the brain. But how those connections come about has been unclear. Now, researchers in Europe have identified a handful of rare genetic variants in multiple families with the condition. The findings, published yesterday (March 5) in PNAS, lend support to the idea that synesthesia is at least partly determined by genes influencing brain development.

“It’s very exciting,” Romke Rouw, a cognitive psychologist at the University of Amsterdam who was not involved in the work, tells Science. “It provides a fascinating suggestion of a link between particular genetic variations and hyperconnectivity in the synesthetic brain.”

Synesthesia is thought to affect around 4 percent of the population and comes in many flavors: some synesthetes hear music when they taste food, others see colors associated with words or emotions. To narrow in on the contribution of genetic variation to the condition, the researchers focused on three families with a type of synesthesia that caused them to experience colors while listening to sounds.

See “Understanding the Connection Between Synesthesia and Absolute Pitch

Using whole-genome sequencing, the team identified 37 genes that harbored variants predictive of whether a person had synesthesia or not, although no variant was found in all three families. Six of those genes, the researchers note in their study, are related to neuronal development—specifically, to a process known as axonogenesis. These genes are all expressed during early childhood, the time when “synesthetic associations” are formed, the authors write in their paper.

The results “hold nicely with what people have been hypothesizing about, and what the neuroimaging literature suggests about how synesthesia might develop,” study coauthor Amanda Tilot of the Max Planck Institute for Psycholinguistics in the Netherlands tells Newsweek.

What’s more, the research reiterates the link between genetic variation and diversity in human perception, study coauthor Simon Baron-Cohen, Director of the Autism Research Centre at the University of Cambridge, notes in a statement. “Synaesthesia is a clear example of neurodiversity which we should respect and celebrate.”

September 2018

The Muscle Issue

The dynamic tissue reveals its secrets

Marketplace

Sponsored Product Updates

StemExpress LeukopakâNow Available in Frozen Format

StemExpress LeukopakâNow Available in Frozen Format

StemExpress, a Folsom, California based leading supplier of human biospecimens, announces the release of frozen Peripheral Blood Leukopaks. Leukopaks provide an enriched source of peripheral blood mononuclear cells (PBMCs) with low granulocyte and red blood cells that can be used in a variety of downstream cell-based applications.

New Antifade Mounting Media from Vector Laboratories Enhances Immunofluorescence Applications

New Antifade Mounting Media from Vector Laboratories Enhances Immunofluorescence Applications

Vector Laboratories, a leader in the development and manufacture of labeling and detection reagents for biomedical research, introduces VECTASHIELD® Vibrance™ – antifade mounting media that delivers significant improvements to the immunofluorescence workflow.

Best Practices for Sample Preparation and Lipid Extraction from Various Samples

Best Practices for Sample Preparation and Lipid Extraction from Various Samples

Download this white paper from Bertin Technologies to learn how to extract and analyze lipid samples from various models!

Bio-Rad Launches CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin for Process Protein Purification

Bio-Rad Launches CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin for Process Protein Purification

Bio-Rad Laboratories, Inc. (NYSE: BIO and BIOb), a global leader of life science research and clinical diagnostic products, today announced the launch of two new chromatography media for process protein purification: CHT Ceramic Hydroxyapatite XT Media and Nuvia HP-Q Resin.