Perception
Ancient brain ‘radar’ shapes visual perception, study shows
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An evolutionarily ancient midbrain region, the superior colliculus, can independently carry out visual computations long attributed mainly to the cortex, according to a PLOS Biology study. The work suggests that attention-guiding mechanisms with roots more than 500 million years old help separate objects from backgrounds and highlight salient details.
A new study challenges the belief that closing one's eyes improves hearing in noise, finding it actually hinders detection of faint sounds. Researchers from Shanghai Jiao Tong University showed that relevant visual cues enhance auditory sensitivity instead. The findings were published in The Journal of the Acoustical Society of America.
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New findings challenge the traditional view of five senses, proposing that humans could have between 22 and 33 distinct ones. These senses blend to create our perception of the world, influencing everything from taste to balance. Experts at the University of London highlight how everyday experiences reveal this complexity.