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Top–down and bottom–up interaction: manipulating the dichotic listening ear advantage
| Content Provider | Semantic Scholar |
|---|---|
| Author | Westerhausen, René Moosmann, Matthias Alho, Kimmo Medvedev, Svyatoslav Hugdahl, Kenneth |
| Copyright Year | 2009 |
| Abstract | The aim of the study was to investigate interactions between top-down and bottom-up information processing in the auditory domain. For this purpose, thirty-five right-handed participants with normal hearing acuity were tested with consonant-vowel dichotic stimulus pairs. Bottom-up stimulus characteristics were manipulated by gradually varying interaural intensity difference from -21 dB in favor of the left ear to +21 dB in favor of the right ear (including a no difference baseline condition). Top-down manipulation consisted of three conditions with different attention instructions: one free report condition, and each one condition requiring the participants to focus their attention on the right ear and on the left ear, respectively. The results showed a significant interaction of bottom-up and top-down manipulations with respect to the modulation of the ear advantage. Post-hoc analysis showed that the effect of directing attention was reduced when the intensity difference favored the to-be-attended ear. Thus, bottom-up intensity and top-down attention manipulations should not be regarded as independent but rather interacting factors when it comes to the manipulation of the ear advantage in a dichotic listening situation. |
| Starting Page | 183 |
| Ending Page | 189 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.brainres.2008.10.070 |
| PubMed reference number | 19028471 |
| Journal | Medline |
| Volume Number | 1250 |
| Alternate Webpage(s) | https://api.elsevier.com/content/article/pii/S0006899308026760 |
| Alternate Webpage(s) | https://www.sciencedirect.com/science/article/pii/S0006899308026760?dgcid=api_sd_search-api-endpoint |
| Alternate Webpage(s) | https://doi.org/10.1016/j.brainres.2008.10.070 |
| Journal | Brain Research |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
