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Representations of temporal information in short-term memory: Are they modality-specific?
Daniel Bratzke1, Katrina R Quinn1, Rolf Ulrich1
1University of Tübingen, Germany.
Acta Psychologica
|August 13, 2016
Summary
Short-term memory for duration appears to be crossmodal, not modality-specific. Articulatory suppression impaired memory for both visual and auditory durations, challenging previous findings.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Memory
Background:
- Previous research suggested temporal information in short-term memory is modality-specific.
- This was based on modality-specific interference effects from secondary tasks.
Purpose of the Study:
- To assess the stability of modality-specific interference effects in temporal short-term memory.
- To investigate whether temporal coding is modality-specific or crossmodal.
Main Methods:
- Participants performed duration discrimination tasks (visual and auditory).
- Secondary tasks, including articulatory suppression, were introduced during the retention interval.
- Interference effects on temporal discrimination were analyzed.
Main Results:
- Articulatory suppression impaired short-term memory for both auditory and visual durations.
- The expected selective interference pattern was not replicated.
- Findings suggest temporal information processing is not strictly modality-specific.
Conclusions:
- The modality-specific interference effects reported previously may not be stable.
- Results support a crossmodal or abstract representation of temporal information in short-term memory.
- This challenges the modality-specific coding hypothesis for temporal information.
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