Temporal light modulation activation in visual cortex: a 7T fMRI study on healthy subjects
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| Titel: | Temporal light modulation activation in visual cortex: a 7T fMRI study on healthy subjects |
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| Autoren: | Lindén, Johannes, Hemphälä, Hillevi, Markenroth Bloch, Karin, Edvinsson, Lars, Surova, Yulia, Mauritsson, Johan, Pålsson, Erik, Magnusson, Viktor, van Westen, Danielle, Björkstrand, Johannes |
| Weitere Verfasser: | Lund University, Faculty of Engineering, LTH, Departments at LTH, Department of Design Sciences, Ergonomics and Aerosol Technology, Lunds universitet, Lunds Tekniska Högskola, Institutioner vid LTH, Institutionen för designvetenskaper, Ergonomi och aerosolteknologi, Originator, Lund University, Faculty of Engineering, LTH, Other operations, LTH, Lund Laser Centre, LLC, Lunds universitet, Lunds Tekniska Högskola, Annan verksamhet, LTH, Lunds lasercentrum, LLC, Originator, Lund University, Faculty of Engineering, LTH, Other operations, LTH, Metalund, Lunds universitet, Lunds Tekniska Högskola, Annan verksamhet, LTH, Metalund, Originator, Lund University, Faculty of Engineering, LTH, Other operations, LTH, Centre for Healthy Indoor Environments, Lunds universitet, Lunds Tekniska Högskola, Annan verksamhet, LTH, Centrum för hälsosamma inomhusmiljöer, CHIE, Originator, Lund University, Faculty of Engineering, LTH, LTH Profile areas, LTH Profile Area: Photon Science and Technology, Lunds universitet, Lunds Tekniska Högskola, LTH profilområden, LTH profilområde: Avancerade ljuskällor, Originator, Lund University, Faculty of Medicine, Lund University Bioimaging Center, Lunds universitet, Medicinska fakulteten, Lund University Bioimaging Center, Originator, Lund University, Faculty of Science, Medical Radiation Physics, Lund, MR Physics, Lunds universitet, Naturvetenskapliga fakulteten, Medicinsk strålningsfysik, Lund, MR Physics, Originator, Lund University, Profile areas and other strong research environments, Lund University Profile areas, LU Profile Area: Light and Materials, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Lunds universitets profilområden, LU profilområde: Ljus och material, Originator, Lund University, Faculty of Medicine, Department of Clinical Sciences, Lund, Section II, Medicine/Emergency Medicine, Lund, Experimental Vascular Research, Lunds universitet, Medicinska fakulteten, Institutionen för kliniska vetenskaper, Lund, Sektion II, Medicin/akutsjukvård, Lund, Experimentell kärlforskning, Originator, Lund University, Faculty of Medicine, Department of Clinical Sciences, Lund, Section II, Medicine/Emergency Medicine, Lund, Lunds universitet, Medicinska fakulteten, Institutionen för kliniska vetenskaper, Lund, Sektion II, Medicin/akutsjukvård, Lund, Originator, Lund University, Faculty of Medicine, Department of Clinical Sciences, Lund, Section IV, Neurology, Lund, Lunds universitet, Medicinska fakulteten, Institutionen för kliniska vetenskaper, Lund, Sektion IV, Neurologi, Lund, Originator, Lund University, Faculty of Science, Department of Physics, Atomic Physics, Lunds universitet, Naturvetenskapliga fakulteten, Fysiska institutionen, Atomfysik, Originator, Lund University, Profile areas and other strong research environments, Lund University Profile areas, LU Profile Area: Proactive Ageing, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Lunds universitets profilområden, LU profilområde: Proaktivt åldrande, Originator, Lund University, Faculty of Medicine, Department of Clinical Sciences, Lund, Section V, Diagnostic Radiology, (Lund), Neuroradiology, Lunds universitet, Medicinska fakulteten, Institutionen för kliniska vetenskaper, Lund, Sektion V, Diagnostisk radiologi, Lund, Neuroradiologi, Originator, Lund University, Profile areas and other strong research environments, Strategic research areas (SRA), MultiPark: Multidisciplinary research on neurodegenerative diseases, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Strategiska forskningsområden (SFO), MultiPark: Multidisciplinary research on neurodegenerative diseases, Originator, Lund University, Faculty of Medicine, Department of Clinical Sciences, Lund, Section V, Diagnostic Radiology, (Lund), Lunds universitet, Medicinska fakulteten, Institutionen för kliniska vetenskaper, Lund, Sektion V, Diagnostisk radiologi, Lund, Originator, Lund University, Faculty of Social Sciences, Departments of Administrative, Economic and Social Sciences, Department of Psychology, Lunds universitet, Samhällsvetenskapliga fakulteten, Samhällsvetenskapliga institutioner och centrumbildningar, Institutionen för psykologi, Originator, Lund University, Faculty of Medicine, Department of Clinical Sciences, Malmö, Clinical Memory Research, Lunds universitet, Medicinska fakulteten, Institutionen för kliniska vetenskaper, Malmö, Klinisk minnesforskning, Originator |
| Quelle: | LEUKOS - Journal of Illuminating Engineering Society of North America. |
| Schlagwörter: | Medical and Health Sciences, Basic Medicine, Neurosciences, Medicin och hälsovetenskap, Medicinska och farmaceutiska grundvetenskaper, Neurovetenskaper, Health Sciences, Occupational Health and Environmental Health, Hälsovetenskap, Arbetsmedicin och miljömedicin, Clinical Medicine, Neurology, Klinisk medicin, Neurologi |
| Beschreibung: | This study investigates the effects of high-frequency temporal light modulation (TLM) on neural activity using functional magnetic resonance imaging (fMRI) in healthy individuals (age 18–50 years). We examined stimulation frequencies both below (50 Hz) and above (≥100 Hz) the perceptible threshold for visual flicker. Our findings revealed that 50 Hz TLM, which is perceived as flickering, leads to substantial activation in visual regions, particularly the lateral occipital cortex. Notably, 100 Hz TLM, which is not perceived as flickering, also elicited similar but weaker activation patterns, indicating that high-frequency TLM can affect neural responses even without conscious perception. Additionally, we observed deactivation in several brain regions during TLM stimulation, suggesting a shift in attentional focus to external stimuli. These results underscore the potential for high-frequency TLM to influence brain activity, with implications for cognitive performance and health. Overall, this study highlights the importance of considering both visual and nonvisual effects of TLM on neural activity, particularly for individuals sensitive to visual stress. |
| Zugangs-URL: | https://doi.org/10.1080/15502724.2025.2583961 |
| Datenbank: | SwePub |
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