Brain imaging

Research image of brain activity

Connectivity takes U-turn in people with rare autism-linked mutations

Patterns of brain connectivity shift during puberty in people with deletion of the 22q11.2 chromosomal region.

By Holly Barker
30 May 2024 | 4 min read

New method reignites controversy over brain clearance during sleep

Tracers injected directly into mouse brain tissue instead of the cerebrospinal fluid show that brain clearance slows during sleep and under anesthesia, according to a study published last week—but proponents of the glymphatic system theory take issue with the technique.

By Elissa Welle
22 May 2024 | 7 min read
A hand holds multi-colored cubes.
Future of fMRI Microphone

Should we use the computational or the network approach to analyze functional brain-imaging data—why not both?

Emerging methods make it possible to combine the two tactics from opposite ends of the analytic spectrum, enabling scientists to have their cake and eat it too.

By Mac Shine
13 May 2024 | 7 min listen
Illustrated portrait of Emily Finn.
Synaptic Microphone

Brain connectivity and letting the data speak with Emily Finn

The Dartmouth College researcher talks about her quest to understand behavior and doing neuroscience “in the woods.”

By Brady Huggett
1 May 2024 | 69 min listen
Illustration of a hand reaching out to adjust a dial that sits in the middle of several images depicting brain activity and various behaviors.

To improve big data, we need small-scale human imaging studies

By insisting that every brain-behavior association study include hundreds or even thousands of participants, we risk stifling innovation. Smaller studies are essential to test new scanning paradigms.

By Emily S. Finn
15 April 2024 | 7 min read
Research image visualizing fMRI test results.

Two studies fail to replicate ‘holy grail’ DIANA fMRI method for detecting neural activity

The signal it flags is more likely the result of cherry-picking data, according to the researchers who conducted one of the new studies, but the lead investigator on the original work disputes that conclusion.

By Calli McMurray
27 March 2024 | 11 min read
An image of a fossil
Evolution Microphone

Expanding ‘little brain’ may have powered dinosaur flight

The cerebellum swelled in size before flight evolved among modern birds’ dinosaur ancestors, according to a new comparison of fossilized skulls and living birds.

By Annie Melchor
23 February 2024 | 4 min listen

Getting musical to spot patterns in whole-brain imaging data: Q&A with Elizabeth Hillman

The new technique takes advantage of humans’ “extraordinary” sensory processing abilities, Hillman says.

By Calli McMurray
21 February 2024 | 0 min watch
An illustration of a brain

How can we fold cellular-level details into whole-brain neuroimaging networks?

I got answers from Bratislav Misic, who is inventing practical ways to connect the brain’s microscopic features with its macroscopic organization.

By Mac Shine
21 February 2024 | 8 min read
An illustration of a mouse sitting in an armchair next to a framed picture of mouse brains

To make fMRI more clinically useful, we need to really get BOLD

A better understanding of the blood oxygen level dependent, or BOLD, signal requires more support for multimodal imaging studies.

By Evelyn Lake
22 January 2024 | 6 min read

Explore more from The Transmitter

Research illustration groups genes by their effects on brain cell types.

Giant analysis reveals how autism-linked genes affect brain cell types

Genes that predispose people to autism account for a large portion of the neuronal and glial cell changes seen in those with the condition.

By Charles Q. Choi
20 June 2024 | 5 min read

Widely used calcium imaging protocol can lead to spurious results, new paper cautions

The technique, which measures calcium currents as a proxy for neuronal firing, sometimes reports unusual and potentially misleading waves of activity in the hippocampus.

By Angie Voyles Askham
19 June 2024 | 0 min watch
Research image of white-matter density in brains of people with deletions or duplications in the 16p11.2 chromosomal region.

Double-empathy problem; dup15q syndrome; myelin loss in aging autistic adults

Here is a roundup of autism-related news and research spotted around the web for the week of 17 June.

By Jill Adams
18 June 2024 | 2 min read