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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Contralateral proximal interference.

Adam Reeves1, Kumar Seluakumaran2, Bertram Scharf1

  • 1Department of Psychology, Northeastern University, Boston, Massachusetts 02115, USA.

The Journal of the Acoustical Society of America
|July 9, 2021
PubMed
Summary
This summary is machine-generated.

Contralateral auditory cues interfere with signal tone detection, especially when simultaneous. This interference, observed in forward and backward masking, suggests attention or temporal integration, not transient responses, explains the effect.

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Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics

Background:

  • Contralateral auditory cues can influence signal detection thresholds.
  • These effects can be attributed to either attention guidance or interference.

Purpose of the Study:

  • To investigate the interference effects of contralateral auditory cues on signal tone detection.
  • To examine the role of cue-signal proximity, temporal overlap, and order in this interference.

Main Methods:

  • Signal tones (40-52 ms, 1500 Hz) were presented with contralateral cues (12 dB above signal level) in broadband noise.
  • Varied cue duration (40, 300, 600 ms), cue-signal temporal separation (0-40 ms), and cue-signal order (forward/backward interference).

Main Results:

  • Long cues significantly raised signal thresholds, particularly when simultaneous (5.3 dB) or with forward interference (5.1 dB).
  • Short cues also raised thresholds, with a substantial increase (~13 dB) when simultaneous and in phase.
  • Forward and backward interference magnitudes were comparable and minimally affected by proximity to cue transients.

Conclusions:

  • Contralateral cue interference is not primarily caused by transient responses to cue onsets/offsets.
  • Sluggish attention or temporal integration mechanisms likely underlie the observed proximal interference effects.