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Observing the Transformation of Bodily Self-consciousness in the Squeeze-machine Experiment
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Published on: March 8, 2019

Interactions between perceptual and numerical space.

Peter Kramer1, Ivilin Stoianov, Carlo Umiltà

  • 1Dipartimento di Psicologia Generale, Università di Padova, Via Venezia 8, 35131, Padova, Italy.

Psychonomic Bulletin & Review
|May 13, 2011
PubMed
Summary
This summary is machine-generated.

This study confirms that the spationumerical interaction (SNIPS) effect occurs before response selection, supporting the mental number line hypothesis. Results reconcile differing findings in numerical cognition research.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psycholinguistics

Background:

  • Numerical cognition research highlights the interplay between numbers and spatial representation.
  • Neuropsychological studies suggest a spatially organized mental number line preceding response selection.
  • Reaction time (RT) studies often indicate response code associations, not necessarily a mental number line.

Purpose of the Study:

  • To isolate and investigate the spationumerical interaction between perception and semantics (SNIPS) effect.
  • To determine if the SNIPS effect occurs before response selection and is influenced by spatial cues.
  • To reconcile conflicting findings between neuropsychological and RT studies in numerical cognition.

Main Methods:

  • Experiment 1 isolated the SNIPS effect from other numerical effects using spatial cues.
  • Experiment 2 analyzed the temporal dynamics of the SNIPS effect by varying cue-target timing.
  • Participants' reaction times and accuracy were measured to infer cognitive processes.

Main Results:

  • The SNIPS effect was successfully isolated and shown to be inducible by both left and right spatial cues.
  • The peak of the SNIPS effect was found to occur when a cue follows a target, not simultaneously.
  • These findings support the existence of a spatially organized mental number line.

Conclusions:

  • The study reconciles neuropsychological and RT findings regarding spatial-numerical interactions.
  • Results provide strong support for the hypothesis of a left-to-right organized mental number line.
  • The SNIPS effect is a valid indicator of early spatial processing in numerical cognition.