This perspective article challenges the traditional view that categorization is a final stage of perception occurring after feature detection and memory retrieval. Instead, the authors propose that categorization is an integral computational strategy implemented throughout all stages of neural signal processing. By utilizing predictive feedback signals to organize feedforward processing, the brain creates a neural context that enables continuous grouping of objects, actions, or events into equivalence clusters.
Key points include:
- Categorization occurs from the beginning of signal processing rather than as an end stage.
- The role of predictive feedback in creating a neural context for organization.
- Evidence drawn from neuroanatomy, electrophysiology, and cognitive science.
- Implications for understanding neuropsychiatric disorders and future research directions.
Key points include:
- Categorization occurs from the beginning of signal processing rather than as an end stage.
- The role of predictive feedback in creating a neural context for organization.
- Evidence drawn from neuroanatomy, electrophysiology, and cognitive science.
- Implications for understanding neuropsychiatric disorders and future research directions.
Researchers present NextBrain, a probabilistic histological atlas of the whole human brain, developed using AI-enabled methods to align histological sections and create delineations for 333 ROIs. A Bayesian tool is also created for automatic segmentation of these ROIs in MRI scans.
A study in Psychiatry Research: Neuroimaging found structural differences in the precuneus, a brain region associated with memory and self-focus, in individuals who tend to ruminate, which is common in depression. The findings suggest that rumination may result from network-level interactions in the brain.
A study found that by age three, children can understand the intentions behind others' actions through the mirror neuron system. This system allows them to mimic and anticipate actions, which is crucial for social development.
Researchers have mapped the complete neural connectome of a fruit fly, detailing all 139,255 nerve cells and their connections. This advance offers insights into how the brain processes information.
