New research reveals that children with autism have varying neuron densities in certain brain regions compared to their peers. Using advanced imaging from the ABCD study, scientists observed lower neuron density in regions associated with memory and problem-solving, while regions like the amygdala showed higher neuron density.

Researchers have developed a noninvasive method called bioluminescent optogenetics (BL-OG), which uses light to activate neurons in the brain without the need for implanted devices. This new technique could transform treatments for neurological conditions like Parkinson's disease by offering a safer alternative to deep brain stimulation.