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Los humanos pueden encontrar el ritmo en los sonidos aleatorios

Jelle van der Werff1,2, Tommaso Tufarelli3, Laura Verga2,4

  • 1Department of Human Neurosciences, University of Rome La Sapienza, Rome, Lazio, Italy.

Royal Society open science
|August 22, 2025
PubMed
Resumen

Los humanos perciben patrones incluso en secuencias de sonidos aleatorios, desafiando la definición estricta de ritmo. Nuestro estudio revela que la aleatoriedad y el ritmo existen en un continuo, impactando la forma en que procesamos la información temporal.

Palabras clave:
El ritmoaleatoriedad temporalel tiempo

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Área de la Ciencia:

  • Psicología cognitiva
  • Percepción auditiva
  • Procesamiento de la información

Sus antecedentes:

  • El ritmo se define típicamente por una clara distinción de la aleatoriedad.
  • Los humanos buscan y utilizan naturalmente las regularidades ambientales, especialmente en los patrones temporales.

Objetivo del estudio:

  • Desafiar la distinción categórica entre ritmo y aleatoriedad en las secuencias auditivas.
  • Investigar cómo los humanos perciben la regularidad en patrones temporales supuestamente aleatorios.
  • Reevaluar las metodologías para generar secuencias de sonidos aleatorios.

Principales métodos:

  • Los participantes se sincronizaron con dos tipos de secuencias de sonidos aleatorios.
  • Se utilizó un análisis estadístico y un modelo matemático para cuantificar la regularidad percibida.
  • Investigó el impacto de la agitación del inicio del evento en la aleatoriedad percibida.

Principales resultados:

  • Los humanos reconstruyen diferentes grados de regularidad a partir de secuencias consideradas aleatorias.
  • Los participantes usaron señales estadísticas para estimar los ritmos subyacentes en secuencias aleatorias.
  • Un método común de generación de tiempo aleatorio (inicio de jittering) introduce una regularidad explotable.

Conclusiones:

  • La ritmicidad y la aleatoriedad representan un continuo, no categorías distintas.
  • Las definiciones actuales de ritmo pueden ser demasiado restrictivas.
  • Los métodos experimentales para crear aleatoriedad temporal requieren refinamiento para garantizar una verdadera imprevisibilidad.