Katja Valli
PhD, Docent
Consciouness; altered states of consciousness; sleep; dreaming; anesthesia; evolutionary psychology
My research mainly focuses on the simulation theories of the evolutionary function
of dreaming (the threat simulation and social simulation theories), and on understanding the neural mechanisms of conscious experiences
in general, and dreaming in particular.
Consciousness research, Altered states of consciousness, Neural correlates of Consciousness, Sleep and Dreaming, Anesthesia, Evolutionary psychology
I regularly teach courses on sleep, dreaming and other altered states of consciusness, and on evolutionary psychology.
- A dream EEG and mentation database (2025) Wong, William; Herzog, Rubén; Andrade, Katia Cristine; Andrillon, Thomas; de Araujo, Draulio Barros; Arnulf, Isabelle; Ataei, Somayeh; Avvenuti, Giulia; Baird, Benjamin; Bellesi, Michele; Bergamo, Damiana; Bernardi, Giulio; Blagrove, Mark; Decat, Nicolas; Demirel, Cagatay; Dresler, Martin; Eichenlaub, Jean-Baptiste; Elce, Valentina; Gais, Steffen; De Gennaro, Luigi; Gott, Jarrod; Hiramatsu, Chihiro; Juel, Bjorn Erik; Konkoly, Karen R.; Kumral, Deniz; Lacaux, Celia; LaRocque, Joshua J.; Lenggenhager, Bigna; Mallett, Remington; Mota-Rolim, Sérgio Arthuro; Motomura, Yuki; Nilsen, Andre Sevenius; Noreika, Valdas; Oudiette, Delphine; Palhano-Fontes, Fernanda; Palmieri, Jessica; Paller, Ken A.; Perogamvros, Lampros; Revonsuo, Antti; van Rijn, Elaine; Scarpelli, Serena; Schönauer, Monika; Schoch, Sarah F.; Siclari, Francesca; Sikka, Pilleriin; Storm, Johan Frederik; Takeichi, Hiroshige; Valli, Katja; Wamsley, Erin J.; Windt, Jennifer M.; Zhang, Jing; Zhao, Jialin; Tsuchiya, Naotsugu
- State anxiety is associated with hormonal, cardiovascular, and sleep parameters in Finnish postmenopausal women (2025) Rimpilä, Ville; Vahlberg, Tero; Valli, Katja; Saaresranta, Tarja
- Dream function and dream amnesia: Dissolution of an apparent paradox (2024)
- Neuroscience and Biobehavioral Reviews
Zhao, Jialin; Schoch, Sarah F.; Valli, Katja; Dresler, Martin
- Morning tiredness and insomnia symptoms are associated with increased blood pressure in midlife women (2024) Rimpilä, Ville; Valli, Katja; Vahlberg, Tero; Saaresranta, Tarja
- Nightmares share genetic risk factors with sleep and psychiatric traits (2024) Ollila Hanna M., Sinnott-Armstrong Nasa, Kantojärvi Katri, Broberg Martin, Palviainen Teemu, Jones Samuel, Ripatti Vili, Pandit Anita, Rong Robin, Kristiansson Kati, Sandman Nils, Valli Katja, Hublin Christer, Ripatti Samuli, Widen Elisabeth, Kaprio Jaakko, Saxena Richa, Paunio Tiina
- The relationship of bispectral index values to conscious state: an analysis of two volunteer cohort studies (2024)
- British Journal of Anaesthesia
Wehrman, Jordan J.; Schuller, Peter J.; Casey, Cameron P.; Scheinin, Annalotta; Kallionpää, Roosa E.; Valli, Katja; Revonsuo, Antti; Kantonen, Oskari; Tanabe, Sean; Filbey, William; Pearce, Robert A.; Sleigh, Jamie W.; Scheinin, Harry; Sanders, Robert D.
- Viral simulations in dreams: The effect of the COVID-19 pandemic on threatening dream content in a Finnish sample of diary dreams (2024)
- Consciousness and Cognition
Loukola, Ville; Tuominen, Jarno; Kirsilä, Santeri; Kyyhkynen, Annimaaria; Lahdenperä, Maron; Parkkali, Lilja; Ranta, Emilia; Malinen, Eveliina; Vanhanen, Sanni; Välimaa, Katariina; Henri Olkoniemi, Henri; Revonsuo, Antti; Valli, Katja
- COVID-19 on Mind: Daily Worry About the Coronavirus Is Linked to Negative Affect Experienced During Mind-Wandering and Dreaming (2023) Sikka Pilleriin, Tuominen Jarno, Ezquerro Nassar Alejandro, Kirberg Manuela, Loukola Ville, Revonsuo Antti, Valli Katja, Windt Jennifer, Bekinschtein Tristan, Noreika Valdas
- Dangerous Waters: The Impact of the 2004 Indian Ocean Tsunami on Survivor Dream Content (2023) Bergman Monica, Macgregor Oskar, Olkoniemi Henri, Redgard Rickard, Revonsuo Antti, Valli Katja
- Decreased Thalamic Activity Is a Correlate for Disconnectedness during Anesthesia with Propofol, Dexmedetomidine and Sevoflurane But Not S-Ketamine (2023) Kantonen Oskari, Laaksonen Lauri, Alkire Michael, Scheinin Annalotta, Långsjö Jaakko, Kallionpää Roosa E., Kaisti Kaike, Radek Linda, Johansson Jarkko, Laitio Timo, Maksimow Anu, Scheinin Joonas, Nyman Mikko, Scheinin Mika, Solin Olof, Vahlberg Tero, Revonsuo Antti, Valli Katja, Scheinin Harry
- Dreams in the Times of the COVID-19 Pandemic: Theoretical Perspectives on the Way the Pandemic Affects Dream Contents (2023) The Social Science of the COVID-19 Pandemic: A Call to Action for Researchers Tuominen Jarno, Revonsuo Antti, Valli Katja
- Circulating oxylipin and bile acid profiles of dexmedetomidine, propofol, sevoflurane, and S-ketamine : a randomised controlled trial using tandem mass spectrometry (2022) Nummela Aleksi, Laaksonen Lauri, Scheinin Annalotta, Kaisti Kaike, Vahlberg Tero, Neuvonen Mikko, Valli Katja, Revonsuo Antti, Perola Markus, Niemi Mikko, Scheinin Harry, Laitio Timo
- Effects of dexmedetomidine, propofol, sevoflurane and S-ketamine on the human metabolome: A randomised trial using nuclear magnetic resonance spectroscopy (2022)
- European Journal of Anaesthesiology
Nummela Aleksi J, Laaksonen Lauri T, Laitio Timo T, Kallionpää RoosaE, Långsjö Jaakko W, Scheinin Joonas M, Vahlberg Tero J, Koskela Harri T, Aittomäki Viljami, Valli Katja J, Revonsuo Antti, Niemi Mikko, Perola Markus, Scheinin Harry
- ‘No Man is an Island’: Effects of social seclusion on social dream content and REM sleep (2022)
- British Journal of Psychology
Tuominen Jarno, Olkoniemi Henri, Revonsuo Antti, Valli Katja
- Unihalvaus (2022) Lääkärikirja Duodecim Valli Katja
- Dream Sharing and the Enhancement of Empathy: Theoretical and Applied Implications (2021) Blagrove M, Lockheart J, Carr M, Basra S, Graham H, Lewis H, Murphy E, Sakalauskaite A, Trotman C, Valli K
- Foundations of human consciousness: Imaging the twilight zone (2021) Scheinin Annalotta, Kantonen Oskari, Alkire Michael, Långsjö Jaakko, Kallionpää Roosa, Kaisti Kaike, Radek Linda, Johansson Jarkko, Sandman Nils, Nyman Mikko, Scheinin Mika, Vahlberg Tero, Revonsuo Antti, Valli Katja, Scheinin Harry
- Nightmare Distress Questionnaire: associated factors (2021)
- Journal of Clinical Sleep Medicine
Schredl Michael, Schramm Finnja, Valli Katja, Müller Erik M., Sandman Nils
- On no man’s land: Subjective experiences during unresponsive and responsive sedative states induced by four different anesthetic agents (2021)
- Consciousness and Cognition
Radek Linda, Koskinen Lauri, Sandman Nils, Laaksonen Lauri, Kallionpää Roosa E., Scheinin Annalotta, Rajala Ville, Maksimow Anu, Laitio Timo, Revonsuo Antti, Scheinin Harry, Valli Katja
- The dynamics of affect across the wake-sleep cycle: From waking mind-wandering to night-time dreaming (2021)
- Consciousness and Cognition
Sikka Pilleriin, Valli Katja, Revonsuo Antti, Tuominen Jarno