unconditioned reflex
[/ˌʌnkənˈdɪʃənd ˈriːfleks/]
nounpl: unconditioned reflexes
reflexo incondicionado
1. An innate, automatic response to a stimulus that occurs naturally without prior learning or conditioning
The pupil dilation in response to dim light is an unconditioned reflex.
A dilatação da pupila em resposta à luz fraca é um reflexo incondicionado.
2. A biological response mediated by the nervous system that is present from birth or develops naturally without training
Salivation when smelling food is an unconditioned reflex in dogs.
A salivação ao cheirar comida é um reflexo incondicionado em cães.
3. In psychology and physiology, a fundamental response that does not depend on prior experience or association
Blinking when something approaches the eye is an unconditioned reflex.
Piscar quando algo se aproxima do olho é um reflexo incondicionado.
This term is primarily used in academic and scientific contexts in both Brazil and the USA. It originated from Ivan Pavlov's classical conditioning research in the early 20th century and remains fundamental to psychology, neuroscience, and physiology education. In Brazilian universities, the term 'reflexo incondicionado' is standard in psychology and biology curricula, often contrasted with 'reflexo condicionado' to explain behavioral principles.
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