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Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes
09:27

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Published on: January 19, 2024

Numerical quantity affects time estimation in the suprasecond range.

Masamichi J Hayashi1, Aino Valli, Synnöve Carlson

  • 1Institute of Biomedicine, Physiology, University of Helsinki, Helsinki 00014, Finland. mjhgml@gmail.com

Neuroscience Letters
|April 9, 2013
PubMed
Summary
This summary is machine-generated.

Larger numbers make time feel longer, especially in females estimating longer durations. This suggests distinct brain representations for numerical magnitude and time, with sex-dependent differences in their association.

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Area of Science:

  • Cognitive Neuroscience
  • Psychology
  • Neuroscience

Background:

  • A known interaction exists between numerical magnitude and time perception, where larger numerosities are perceived as longer durations.
  • This numerosity-time interaction is hypothesized to involve shared neural substrates in the parietal cortex.
  • Existing research suggests distinct neural pathways for subsecond and suprasecond time intervals, but their interaction with numerosity remains unclear.

Purpose of the Study:

  • To investigate whether the numerosity-time interaction is dependent on the duration of time intervals assessed.
  • To determine if numerical information interacts with time estimation across different time ranges (subsecond vs. suprasecond).
  • To explore potential sex differences in the interaction between numerical magnitude and time perception.

Main Methods:

  • Participants were presented with stimuli varying in numerical magnitude and asked to estimate time intervals.
  • The study focused on time estimation within the suprasecond range.
  • Behavioral data were analyzed to identify interactions between numerosity and time estimation, with comparisons made between male and female participants.

Main Results:

  • Numerical information significantly interacted with time estimation in the suprasecond range for females.
  • This interaction was not observed in males for suprasecond time intervals.
  • The findings indicate a sex-specific modulation of the numerosity-time relationship.

Conclusions:

  • Numerical magnitude and suprasecond time intervals share neural representations in the human brain.
  • The strength of association between these representations differs between males and females.
  • This sex difference may explain the observed interaction patterns in time estimation tasks.