Probability-driven and stimulus-driven orienting of attention to time and sensory modality
- 126 Downloads
The timing and the sensory modality of behaviorally relevant events often vary predictably, so that it is beneficial to adapt the sensory system to their statistical regularities. Indeed, statistical information about target timing and/or sensory modality modulates behavioral responses—called expectation effects. Responses are also facilitated by short-term repetitions of target timing and/or sensory modality—called priming effects. We examined how the expectation and priming effects on target timing (short vs. long cue-to-target interval) and target modality (auditory vs. visual) interacted. Temporal expectation was manipulated across blocks, while modality expectation was manipulated across participants. Responses were faster when targets were presented at the expected timing and/or in the expected modality in an additive manner, suggesting that temporal and modality expectation operate relatively independently. Similarly, responses were faster when the timing and/or modality of targets was repeated across trials in an additive manner, suggesting that temporal and modality priming operate relatively independently. Importantly, the interactions between expectation and priming were domain specific. In the temporal domain, temporal-expectation effects were observed only when temporal-priming effects were absent. In the modality domain, modality-priming effects predominated for auditory targets whereas modality-expectation effects predominated for visual targets. Thus, the interactions between probability-driven expectation and stimulus-driven priming processes appear to be controlled separately for the mechanisms that direct attention to specific temporal intervals and for the mechanisms that direct attention to specific sensory modalities. These results may suggest that the sensory system concurrently optimizes attentional priorities within temporal and sensory-modality domains.
KeywordsTemporal processing Attention: Selective
This study was supported by a National Institutes of Health grant (T32 NS047987).
Compliance with ethical standards
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants involved in the study.
Conflict of interest
The authors declare that they have no conflict of interest.
Open practices statement
None of the data or materials for the experiment reported here are available online, but the data and materials can be provided upon request. The experiment was not preregistered.
- Kleiner, M., Brainard, D., & Pelli, D. (2007). What’s new in Psychtoolbox-3? Perception, 36, ECVP abstract supplement.Google Scholar
- Mühlberg, S., & Soto-Faraco, S. (2018). Cross-modal decoupling in temporal attention between audition and touch. Psychological Research, 1–14. Advance online publication. https://doi.org/10.1007/s00426-018-1023-6
- Woodrow, H. (1914). The measurement of attention. The Psychological Monographs, 17(5).Google Scholar