Reduced Fading of Visual Afterimages after Transcranial Magnetic Stimulation over Early Visual Cortex
| Autor: | Rosanne L. Rademaker, Alexander T. Sack, Tahnée Engelen |
|---|---|
| Přispěvatelé: | Emotion, RS: FPN CN 10, Cognition, RS: FPN CN 4 |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty REPRESENTATION genetic structures Photic Stimulation Cognitive Neuroscience media_common.quotation_subject medicine.medical_treatment Intraparietal sulcus Audiology behavioral disciplines and activities INTRAPARIETAL SULCUS Young Adult Perception PREMOTOR medicine Humans FILLING-IN Fading CONNECTIONS Visual Cortex media_common MOVEMENTS Filling-in Hand Transcranial Magnetic Stimulation Afterimage eye diseases Transcranial magnetic stimulation Visual cortex medicine.anatomical_structure SIZE POSTERIOR PARIETAL Female sense organs 190 Visual Computation Psychology INTEGRATION psychological phenomena and processes EXTENSION |
| Zdroj: | Journal of Cognitive Neuroscience, 31(9), 1368-1379. MIT Press Journal of Cognitive Neuroscience Journal of Cognitive Neuroscience, 31, 1368-1379 Journal of Cognitive Neuroscience, 31, 9, pp. 1368-1379 |
| ISSN: | 0898-929X |
| Popis: | Contains fulltext : 207060pub.pdf (Publisher’s version ) (Open Access) In the complete absence of small transients in visual inputs (e.g., by experimentally stabilizing an image on the retina or in everyday life during intent staring), information perceived by the eyes will fade from the perceptual experience. Although the mechanisms of visual fading remain poorly understood, one possibility is that higher level brain regions actively suppress the stable visual signals via targeted feedback onto early visual cortex (EVC). Here, we used positive afterimages and multisensory conflict to induce gestalt-like fading of participants' own hands. In two separate experiments, participants rated the perceived quality of their hands both before and after transcranial magnetic stimulation (TMS) was applied over EVC. In a first experiment, triple-pulse TMS was able to make a faded hand appear less faded after the pulses were applied, compared with placebo pulses. A second experiment demonstrated that this was because triple-pulse TMS slowed down fading of the removed hand that otherwise occurs naturally over time. Interestingly, TMS similarly affected the left and right hands, despite being applied only over the right EVC. Together, our results suggest that TMS over EVC attenuates the effects of visual fading in positive afterimages, and it might do so by crossing transcollosal connections or via multimodal integration sites in which both hands are represented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|