Carregant...
Tipus de document
Treball de fi de màsterData de publicació
Llicència de publicació
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/182769
Investigating sequential effects in humans performing a 2AFC psychophysical task
Títol de la revista
Autors
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
Perceptual decision making is the process by which our brain collects and accumulates sensory information and analyzes it to generate an action. However, not only perception is responsible for our decisions but it has been shown that they are also influenced by past choices. Indeed, in a variety of behavioral tasks, the subjects presented sequential effects, i.e. dependencies deriving from previous experiences in the decision-making process.
Based on previous studies conducted on rats, we aimed to investigate this matter on human subjects, to analyze similarities and differences between the two species and to verify the extent to which this behavior occurs. To do this, we developed a psychophysical experiment that consists of an auditory task in which the participants have to choose between two alternatives. The experiment was carried out using a software created by the laboratory and run on an iPad, a revolutionary methodology in the field of psychophysics.
Analyzing the data obtained we showed that most of the subjects presented sequential effects in the choice between the two alternatives, in particular when the decisions were taken in conditions of perceptual uncertainty.
Descripció
Treballs Finals de Grau d'Enginyeria Biomèdica. Facultat de Medicina i Ciències de la Salut. Universitat de Barcelona. Curs: 2021-2022. Director: Manuel Molano-Mazón, Co-director: Jaime De la Rocha, Tutor: Roser Sala Llonch
Matèries (anglès)
Citació
Citació
LOMBARDO, Debora. Investigating sequential effects in humans performing a 2AFC psychophysical task. [consulta: 25 de febrer de 2026]. [Disponible a: https://hdl.handle.net/2445/182769]