Persona:
Mayas Arellano, Julia

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0000-0001-5003-4995
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Mayas Arellano
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Julia
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2018 - 20192
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Autor: Ballesteros Jiménez, Soledad × search.filters.applied.f.itemDepartamento: Psicología Básica I ×

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Mostrando 1 - 2 de 2
  • Miniatura
    Publicación
    Interaction dynamics between grouping principles in touch: phenomenological and psychophysical evidence
    (Springer, 2018-05-24) Prieto Lara, Antonio; Mayas Arellano, Julia; Ballesteros Jiménez, Soledad
    In two experiments, we investigated the interactions between the grouping principles of spatial proximity and texture similarity in touch. For that purpose, we adapted to touch two paradigms widely employed in vision. In Experiment 1, we used an experimental phenomenological task consisting of rating the strength of grouping in both acting alone and conjoined cooperative and competitive conditions. In Experiment 2, participants performed a psychophysical task in which an objective (in)correct response was defined by selectively attending to one grouping cue in different blocks of trials. The results showed that spatial proximity dominated over texture similarity when the two principles were conjoined in competition. In addition, the present results are compatible with an additive model of grouping effects as indicated by the greater grouping effect in the cooperative condition and the smaller grouping effect in the competitive condition relative to a.0cting alone grouping principles. The similarities and differences between vision and touch are discussed.
  • Miniatura
    Publicación
    Behavioral and electrophysiological correlates of interactions between grouping principles in touch: Evidence from psychophysical indirect tasks
    (Elsevier, 2019-06-01) Prieto Lara, Antonio; Mayas Arellano, Julia; Ballesteros Jiménez, Soledad
    In two experiments we investigated the behavioral and brain correlates of the interactions between spatial-proximity and texture-similarity grouping principles in touch. We designed two adaptations of the repetition discrimination task (RDT) previously used in vision. This task provides an indirect measure of grouping that does not require explicit attention to the grouping process. In Experiment 1, participants were presented with a row of elements alternating in texture except for one pair in which the same texture was repeated. The participants had to decide whether the repeated texture stimuli (similarity grouping) were smooth or rough, while the spatial proximity between targets and distractors was varied either to facilitate or hinder the response. In Experiment 2, participants indicated which cohort (proximity grouping) contained more elements, while texture-similarity within and between cohorts was modified. The results indicated additive effects of grouping cues in which proximity dominated the perceptual grouping process when the two principles acted together. In addition, the independent component analysis (ICA) performed on electrophysiological data revealed the implication of a widespread network of sensorimotor, prefrontal, parietal and occipital brain areas in both experiments.