Niklas Ravaja

According to our database, Niklas Ravaja authored at least 74 papers between 2004 and 2025.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of three.

2025

Fingerprint patterns of human brain activity reveal a dynamic mix of emotional responses during virtual intergroup encounters.

Gloria Mendoza-Franco, Inga Jasinskaja-Lahti, Matthias B. Aulbach, Ville J. Harjunen, Anna Peltola, J. Niklas Ravaja, Matilde Tassinari, Saana Vainio, Iiro P. Jääskeläinen

NeuroImage, 2025

Effects of many conflicting objectives on decision-makers' cognitive burden and decision consistency.

J. Matias Kivikangas, Eeva Vilkkumaa, Julian Blank, Ville J. Harjunen, Pekka Malo, Kalyanmoy Deb, Niklas Ravaja, Jyrki Wallenius

Eur. J. Oper. Res., 2025

2024

Haptics in social interaction with agents and avatars in virtual reality: a systematic review.

Giulio Jacucci, Andrea Bellucci, Imtiaj Ahmed, Ville J. Harjunen, Michiel M. A. Spapé, Niklas Ravaja

Virtual Real., December, 2024

Cross-Subject EEG Feedback for Implicit Image Generation.

Carlos de la Torre-Ortiz, Michiel M. A. Spapé, Niklas Ravaja, Tuukka Ruotsalo

IEEE Trans. Cybern., October, 2024

Meditating in a neurofeedback virtual reality: effects on sense of presence, meditation depth and brain oscillations.

Mikko Salminen, Simo Järvelä, Ilkka Kosunen, Antti Ruonala, Juho Hamari, Niklas Ravaja, Giulio Jacucci

Behav. Inf. Technol., September, 2024

2023

Brain-Computer Interface for Generating Personally Attractive Images.

Michiel M. A. Spapé, Keith M. Davis, Lauri Kangassalo, Niklas Ravaja, Zania Sovijärvi-Spapé, Tuukka Ruotsalo

IEEE Trans. Affect. Comput., 2023

Receiving a Mediated Touch From Your Partner vs. a Male Stranger: How Visual Feedback of Touch and Its Sender Influence Touch Experience.

Sima Ipakchian Askari, Ville J. Harjunen, Michiel M. A. Spapé, Antal Haans, Niklas Ravaja, Wijnand A. IJsselsteijn

IEEE Trans. Affect. Comput., 2023

Touching Virtual Humans: Haptic Responses Reveal the Emotional Impact of Affective Agents.

Imtiaj Ahmed, Ville J. Harjunen, Giulio Jacucci, Niklas Ravaja, Tuukka Ruotsalo, Michiel M. A. Spapé

IEEE Trans. Affect. Comput., 2023

2022

Evoking Physiological Synchrony and Empathy Using Social VR With Biofeedback.

Mikko Salminen, Simo Järvelä, Antti Ruonala, Ville J. Harjunen, Juho Hamari, Giulio Jacucci, Niklas Ravaja

IEEE Trans. Affect. Comput., 2022

2021

Augmented Virtual Reality Meditation: Shared Dyadic Biofeedback Increases Social Presence Via Respiratory Synchrony.

Simo Järvelä, Benjamin Cowley, Mikko Salminen, Giulio Jacucci, Juho Hamari, Niklas Ravaja

ACM Trans. Soc. Comput., 2021

2019

PeyeDF: an Eye-Tracking Application for Reading and Self-Indexing Research.

Marco Filetti, Hamed R. Tavakoli, Niklas Ravaja, Giulio Jacucci

CoRR, 2019

DYNECOM: Augmenting Empathy in VR with Dyadic Synchrony Neurofeedback.

Simo Järvelä, Mikko Salminen, Antti Ruonala, Janne Timonen, Kristiina Mannermaa, Niklas Ravaja, Giulio Jacucci

Proceedings of the 52nd Hawaii International Conference on System Sciences, 2019

2018

Virtual Character Facial Expressions Influence Human Brain and Facial EMG Activity in a Decision-Making Game.

Niklas Ravaja, Gary Bente, Jari Kätsyri, Mikko Salminen, Tapio Takala

IEEE Trans. Affect. Comput., 2018

Heart-rate sonification biofeedback for poker.

Ilkka Kosunen, Jussi Palomäki, Michael Laakasuo, Kai Kuikkaniemi, Niklas Ravaja, Giulio Jacucci

Int. J. Hum. Comput. Stud., 2018

Context matters: The impact of product type, emotional attachment and information overload on choice quality.

Pekka J. Korhonen, Pekka Malo, Tommi Pajala, Niklas Ravaja, Outi Somervuori, Jyrki Wallenius

Eur. J. Oper. Res., 2018

Persuaded by the machine: The effect of virtual nonverbal cues and individual differences on compliance in economic bargaining.

Ville J. Harjunen, Michiel M. A. Spapé, Imtiaj Ahmed, Giulio Jacucci, Niklas Ravaja

Comput. Hum. Behav., 2018

Bio-adaptive Social VR to Evoke Affective Interdependence: DYNECOM.

Mikko Salminen, Simo Järvelä, Antti Ruonala, Janne Timonen, Kristiina Mannermaa, Niklas Ravaja, Giulio Jacucci

Proceedings of the 23rd International Conference on Intelligent User Interfaces, 2018

Economic decision-making in free-to-play games: A laboratory experiment to study the effects of currency conversion.

Mikko Salminen, Simo Järvelä, Niklas Ravaja

Proceedings of the 2nd International GamiFIN Conference, Pori, Finland, May 21-23, 2018., 2018

2017

Neuroadaptive Meditation in the Real World.

Ilkka Kosunen, Antti Ruonala, Mikko Salminen, Simo Järvelä, Niklas Ravaja, Giulio Jacucci

Proceedings of the 2017 ACM Workshop on An Application-oriented Approach to BCI out of the laboratory, 2017

BCI for Physiological Text Annotation.

Oswald Barral, Ilkka Kosunen, Tuukka Ruotsalo, Michiel M. A. Spapé, Manuel J. A. Eugster, Niklas Ravaja, Samuel Kaski, Giulio Jacucci

Proceedings of the 2017 ACM Workshop on An Application-oriented Approach to BCI out of the laboratory, 2017

2016

The Spatial Presence Experience Scale (SPES).

Tilo Hartmann, Werner Wirth, Holger Schramm, Christoph Klimmt, Peter Vorderer, André Gysbers, Saskia Böcking, Niklas Ravaja, Jari Laarni, Timo Saari, Feliz Gouveia, Ana Maria Sacau

J. Media Psychol. Theor. Methods Appl., 2016

Extracting relevance and affect information from physiological text annotation.

Oswald Barral, Ilkka Kosunen, Tuukka Ruotsalo, Michiel M. A. Spapé, Manuel J. A. Eugster, Niklas Ravaja, Samuel Kaski, Giulio Jacucci

User Model. User Adapt. Interact., 2016

Why share expertise? A closer look at the quality of motivation to share or withhold knowledge.

Minna Stenius, Nelli Hankonen, Niklas Ravaja, Ari Haukkala

J. Knowl. Manag., 2016

The Psychophysiology Primer: A Guide to Methods and a Broad Review with a Focus on Human-Computer Interaction.

Benjamin Cowley, Marco Filetti, Kristian Lukander, Jari Torniainen, Andreas Henelius, Lauri Ahonen, Oswald Barral, Ilkka Kosunen, Teppo Valtonen, Minna Huotilainen, Niklas Ravaja, Giulio Jacucci

Found. Trends Hum. Comput. Interact., 2016

A short review and primer on electromyography in human computer interaction applications.

Niklas Ravaja, Ben Cowley, Jari Torniainen

CoRR, 2016

Natural brain-information interfaces: Recommending information by relevance inferred from human brain signals.

Manuel J. A. Eugster, Tuukka Ruotsalo, Michiel M. A. Spapé, Oswald Barral, Niklas Ravaja, Giulio Jacucci, Samuel Kaski

CoRR, 2016

Total Immersion: Designing for Affective Symbiosis in a Virtual Reality Game with Haptics, Biosensors, and Emotive Agents.

Imtiaj Ahmed, Ville J. Harjunen, Giulio Jacucci, Niklas Ravaja, Michiel M. A. Spapé

Proceedings of the Symbiotic Interaction, 2016

RelaWorld: Neuroadaptive and Immersive Virtual Reality Meditation System.

Ilkka Kosunen, Mikko Salminen, Simo Järvelä, Antti Ruonala, Niklas Ravaja, Giulio Jacucci

Proceedings of the 21st International Conference on Intelligent User Interfaces, 2016

Reach out and touch me: effects of four distinct haptic technologies on affective touch in virtual reality.

Imtiaj Ahmed, Ville J. Harjunen, Giulio Jacucci, Eve E. Hoggan, Niklas Ravaja, Michiel M. A. Spapé

Proceedings of the 18th ACM International Conference on Multimodal Interaction, 2016

Reading a Newspaper on Print Versus Screen: A Motivational Perspective.

Dorina Rajanen, Mikko Salminen, Niklas Ravaja

Proceedings of the 49th Hawaii International Conference on System Sciences, 2016

2015

Online News and Corporate ReputationA Neurophysiological Investigation.

Niklas Ravaja, Pekka Aula, Alessio Falco, Salla Laaksonen, Mikko Salminen, Antti Ainamo

J. Media Psychol. Theor. Methods Appl., 2015

Understanding knowledge sharing in the work context by applying a belief elicitation study.

Minna Stenius, Nelli Hankonen, Ari Haukkala, Niklas Ravaja

J. Knowl. Manag., 2015

Human Computer Interaction Meets Psychophysiology: A Critical Perspective.

Michiel M. A. Spapé, Marco Filetti, Manuel J. A. Eugster, Giulio Jacucci, Niklas Ravaja

Proceedings of the Symbiotic Interaction - 4th International Workshop, 2015

Psychophysiological responses to digital media: frontal EEG alpha asymmetry during newspaper reading on a tablet versus print.

Dorina Rajanen, Mikko Salminen, Niklas Ravaja

Proceedings of the 19th International Academic Mindtrek Conference, 2015

Exploring Peripheral Physiology as a Predictor of Perceived Relevance in Information Retrieval.

Oswald Barral, Manuel J. A. Eugster, Tuukka Ruotsalo, Michiel M. A. Spapé, Ilkka Kosunen, Niklas Ravaja, Samuel Kaski, Giulio Jacucci

Proceedings of the 20th International Conference on Intelligent User Interfaces, 2015

Ways to Measure Spatial Presence: Review and Future Directions.

Jari Laarni, Niklas Ravaja, Timo Saari, Saskia Böcking, Tilo Hartmann, Holger Schramm

Proceedings of the Immersed in Media, Telepresence Theory, Measurement & Technology, 2015

2014

A Practical Guide to Using Digital Games as an Experiment Stimulus.

Simo Järvelä, Inger Ekman, J. Matias Kivikangas, Niklas Ravaja

Trans. Digit. Games Res. Assoc., 2014

Learning When Serious: Psychophysiological Evaluation of a Technology-Enhanced Learning Game.

Ben Cowley, Martino Fantato, Charlene Jennett, Martin Ruskov, Niklas Ravaja

J. Educ. Technol. Soc., 2014

Suboptimal facial expression primes in textual media messages: Evidence for the affective congruency effect.

Niklas Ravaja, Jari Kätsyri

Comput. Hum. Behav., 2014

Predicting term-relevance from brain signals.

Manuel J. A. Eugster, Tuukka Ruotsalo, Michiel M. A. Spapé, Ilkka Kosunen, Oswald Barral, Niklas Ravaja, Giulio Jacucci, Samuel Kaski

Proceedings of the 37th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2014

Social Psychology of the Digital Age: The Interpersonal Neuroscience of Mediated Communication.

Michiel M. A. Spapé, Niklas Ravaja

Proceedings of the Social Computing and Social Media, 2014

2013

Emotional Responses to Victory and Defeat as a Function of Opponent.

J. Matias Kivikangas, Niklas Ravaja

IEEE Trans. Affect. Comput., 2013

Learning loops - interactions between guided reflection and experience-based learning in a serious game activity.

Ben Cowley, Tuija Heikura, Niklas Ravaja

J. Comput. Assist. Learn., 2013

Mediated Cues of Group Emotion during Knowledge-Work Tasks: Effects on Subjective and Physiological Responses.

Mikko Salminen, Niklas Ravaja, Kari Kallinen, Timo Saari

Interact. Comput., 2013

Cardiovascular physiology predicts learning effects in a serious game activity.

Ben Cowley, Niklas Ravaja, Tuija Heikura

Comput. Educ., 2013

2012

Physiological compliance for social gaming analysis: Cooperative versus competitive play.

Guillaume Chanel, J. Matias Kivikangas, Niklas Ravaja

Interact. Comput., 2012

Aesthetic images modulate emotional responses to reading news messages on a small screen: A psychophysiological investigation.

Jari Kätsyri, Niklas Ravaja, Mikko Salminen

Int. J. Hum. Comput. Stud., 2012

Digital games as experiment stimulus.

Simo Järvelä, Inger Ekman, J. Matias Kivikangas, Niklas Ravaja

Proceedings of Nordic DiGRA 2012 Conference, 2012

2011

Developing a triangulation system for digital game events, observational video, and psychophysiological data to study emotional responses to a virtual character.

J. Matias Kivikangas, Lennart E. Nacke, Niklas Ravaja

Entertain. Comput., 2011

The Effects of Content Type and Presentation Style on User Experiences of Multimedia Content on a Tablet PC.

Kari Kallinen, Jan Kallenbach, Niklas Ravaja

Proceedings of the Human-Computer Interaction. Users and Applications, 2011

Individual Differences in Work Load While Doing Multitasking with a Computer.

Kari Kallinen, Inger Ekman, Niklas Ravaja

Proceedings of the Human-Computer Interaction. Design and Development Approaches, 2011

Social Architecture and the Emergence of Power Laws in Online Social Games.

Ben Kirman, Francesco Collova, Fabrizio Davide, Eva Ferrari, Jonathan Freeman, Shaun W. Lawson, Conor Linehan, Niklas Ravaja

Proceedings of the 2011 DiGRA International Conference: Think, Design, Play, 2011

2010

Review on psychophysiological methods in game research.

Inger Ekman, Guillaume Chanel, Simo Järvelä, Ben Cowley, Mikko Salminen, Pentti Henttonen, Niklas Ravaja

Proceedings of Nordic DiGRA 2010 Conference, 2010

The influence of implicit and explicit biofeedback in first-person shooter games.

Kai Kuikkaniemi, Toni Laitinen, Marko Turpeinen, Timo Saari, Ilkka Kosunen, Niklas Ravaja

Proceedings of the 28th International Conference on Human Factors in Computing Systems, 2010

2009

Suboptimal Affective Primes in Video Messages.

J. Matias Kivikangas, Niklas Ravaja

J. Media Psychol. Theor. Methods Appl., 2009

Emotionally Adapted Games - An Example of a First Person Shooter.

Timo Saari, Marko Turpeinen, Kai Kuikkaniemi, Ilkka Kosunen, Niklas Ravaja

Proceedings of the Human-Computer Interaction. Interacting in Various Application Domains, 2009

A Mobile and Desktop Application for Enhancing Group Awareness in Knowledge Work Teams.

Timo Saari, Kari Kallinen, Mikko Salminen, Niklas Ravaja, Marco Rapino

Proceedings of the Human-Computer Interaction. Ambient, 2009

Supporting Situation Awareness in Demanding Operating Environments through Wearable User Interfaces.

Jari Laarni, Juhani Heinilä, Jukka Häkkinen, Virpi Kalakoski, Kari Kallinen, Kristian Lukander, Paula Löppönen, Tapio Palomäki, Niklas Ravaja, Paula Savioja, Antti Väätänen

Proceedings of the Engineering Psychology and Cognitive Ergonomics, 2009

2008

A Mobile System and Application for Facilitating Emotional Awareness in Knowledge Work Teams.

Timo Saari, Kari Kallinen, Mikko Salminen, Niklas Ravaja, Kliment Yanev

Proceedings of the 41st Hawaii International International Conference on Systems Science (HICSS-41 2008), 2008

2007

Comparing speakers versus headphones in listening to news from a computer - individual differences and psychophysiological responses.

Kari Kallinen, Niklas Ravaja

Comput. Hum. Behav., 2007

Oscillatory Brain Responses Evoked by Video Game Events: The Case of Super Monkey Ball 2.

Mikko Salminen, Niklas Ravaja

Cyberpsychology Behav. Soc. Netw., 2007

Mobile Application for Increasing Contextual and Emotional Work Group Awareness.

Mikko Salminen, Kari Kallinen, Kliment Yanev, Niklas Ravaja, Timo Saari

Proceedings of the Human-Computer Interaction, 2007

Usability of Hybridmedia Services - PC and Mobile Applications Compared.

Jari Laarni, Liisa Lähteenmäki, Johanna Kuosmanen, Niklas Ravaja

Proceedings of the Human-Computer Interaction. HCI Intelligent Multimodal Interaction Environments, 2007

2006

Spatial Presence and Emotions during Video Game Playing: Does It Matter with Whom You Play?

Niklas Ravaja, Timo Saari, Marko Turpeinen, Jari Laarni, Mikko Salminen, J. Matias Kivikangas

Presence Teleoperators Virtual Environ., 2006

2005

Effects of the rate of computer-mediated speech on emotion-related subjective and physiological responses.

Kari Kallinen, Niklas Ravaja

Behav. Inf. Technol., 2005

Persuasive Games and Simulations for Personal Health Management.

Timo Saari, Niklas Ravaja, Jari Laarni, Marko Turpeinen

Proceedings of the Digital Games Research Conference 2005, 2005

Towards Emotionally Adapted Games based on User Controlled Emotion Knobs.

Timo Saari, Niklas Ravaja, Jari Laarni, Marko Turpeinen

Proceedings of the Digital Games Research Conference 2005, 2005

The Psychophysiology of Video Gaming: Phasic Emotional Responses to Game Events.

Niklas Ravaja, Timo Saari, Jari Laarni, Kari Kallinen, Mikko Salminen, Jussi Holopainen, Aki Järvinen

Proceedings of the Digital Games Research Conference 2005, 2005

Presence experience in mobile gaming.

Jari Laarni, Niklas Ravaja, Timo Saari

Proceedings of the Digital Games Research Conference 2005, 2005

2004

Emotional response patterns and sense of presence during video games: potential criterion variables for game design.

Niklas Ravaja, Mikko Salminen, Jussi Holopainen, Timo Saari, Jari Laarni, Aki Järvinen

Proceedings of the Third Nordic Conference on Human-Computer Interaction 2004, 2004

Transcendent experience in the use of computer-based media.

Jari Laarni, Niklas Ravaja, Kari Kallinen, Timo Saari

Proceedings of the Third Nordic Conference on Human-Computer Interaction 2004, 2004

Gender and habitual use of media moderate the memory performance in emotional-multimodal context.

Kari Kallinen, Jari Laarni, Niklas Ravaja, Timo Saari

Proceedings of the Third Nordic Conference on Human-Computer Interaction 2004, 2004

Emotionally Loaded Mobile Multimedia Messaging.

Timo Saari, Marko Turpeinen, Jari Laarni, Niklas Ravaja, Kari Kallinen

Proceedings of the Entertainment Computing, 2004

Psychologically targeted persuasive advertising and product information in e-commerce.

Timo Saari, Niklas Ravaja, Jari Laarni, Marko Turpeinen, Kari Kallinen

Proceedings of the 6th International Conference on Electronic Commerce, 2004