rod–cone break

the shift in visual sensitivity that occurs during dark adaptation when the sensitivity of the retinal rods first exceeds that of the retinal cones. When visual sensitivity is measured in the dark following a very bright flash of light, the cones reach maximum sensitivity after about 7 minutes. However, overall visual sensitivity continues to improve for about 20 more minutes as rhodopsin regenerates and the rods reach their maximum sensitivity.

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Psychology term of the day

February 18th 2025

underachiever

n. a person who consistently achieves below his or her demonstrated capacity. Underachievement may be specific to an area of study or work, or it may be general. It is more prevalent among boys than girls and is quite common in bright and even gifted children. It is also prevalent among average students and children with special needs. Compare overachiever.