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Tesi etd-11222019-171550


Tipo di tesi
Tesi di laurea magistrale
Autore
MANCARI, ALESSANDRO
URN
etd-11222019-171550
Titolo
Effect of Auditory Entrainment on Visual Time Perception
Dipartimento
BIOLOGIA
Corso di studi
BIOLOGIA MOLECOLARE E CELLULARE
Relatori
relatore Prof.ssa Morrone, Maria Concetta
Parole chiave
  • accuracy
  • auditory entrainment
  • behavioral oscillations
  • just noticeable difference
  • neural oscillations
  • psychometric functions
  • response bias
  • temporal order judgment
  • visual time perception
Data inizio appello
09/12/2019
Consultabilità
Non consultabile
Data di rilascio
09/12/2089
Riassunto
Neural oscillations are almost ubiquitous in the brain and, besides affecting the way we perceive and respond to stimuli, they are thought to play a fundamental role in time perception.
In this psychophysical study, I used visual temporal order judgments to assess whether entrainment to periodical auditory stimuli affects visual time perception. Psychometric functions for temporal order were estimated to measure how the entrainment frequency (5, 10, 15, 20, 25 Hz) changes perceptual sensitivity, finding higher thresholds with entrainment in the alpha band (10 Hz). In addition, oscillations in both accuracy and response bias as a function of entrainment frequency (5 and 15 Hz) were analyzed by applying general linear model analysis and fitting sinusoidal functions on the time series of responses collected at different intervals (100-700 ms) following the entraining sound. The frequency of fluctuation of the participants’ performance was affected by the entrainment, but no apparent functional relation was found between entrainment frequency and behavioral oscillations.
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