Martin Schaefer

Martin Schaefer
Karolinska Institutet | KI · Department of Clinical Neuroscience

Master of Science

About

10
Publications
3,046
Reads
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241
Citations
Citations since 2017
10 Research Items
241 Citations
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Introduction
Breathing is one of the fundamental rhythms of life, with its effects stretching far beyond basic oxygenation. For my PhD project I use EEG methods to investigate how breathing affects brain activity and behavioral performance. For more information about our lab see: https://www.perceptionlab.se/
Additional affiliations
September 2017 - January 2019
Karolinska Institutet
Position
  • Research Assistant
Description
  • I worked on a variety of projects collecting behavioral, physiological, and neuroimaging data. Additionally, this work included designing experiments, data analysis, writing scientific articles, and presenting experimental findings at conferences.
September 2017 - January 2019
Karolinska Institutet
Position
  • Research Assistant
Description
  • I worked at the department of Medical Epidemiology and Biostatistics to help with the CREAT project which investigates anorexia nervosa in monozygotic twins. I was responsible for performing fMRI scans and helped with neurocognitive testing.
June 2016 - December 2016
Karolinska Institutet
Position
  • Research Assistant
Description
  • I was hired in order to set up, and collect data for a study on the influence of natural diversity on human stress levels. My work included designing the experiment, and collecting physiological data from dozens of human subjects.
Education
September 2014 - June 2016
Stockholm University
Field of study
  • Neurobiology
September 2011 - July 2014
Maastricht University
Field of study
  • Natural Sciences

Publications

Publications (10)
Article
Full-text available
Although stress is an increasing global health problem in cities, urban green spaces can provide health benefits. There is, however, a lack of understanding of the link between physiological mechanisms and qualities of urban green spaces. Here, we compare the effects of visual stimuli (360 degree virtual photos of an urban environment, forest, and...
Article
Full-text available
The use of oral contraceptives (OC) in the form of a hormonal pill has been widespread for decades. Despite its popularity and long-time use, there is still much ambiguity and anecdotal reports about a range of potential side effects. Here, we addressed the potential effect of OC use on chemosensory perception. Previous research has almost exclusiv...
Article
Full-text available
Olfactory dysfunction is a prevalent non-motor symptom of Parkinson's disease (PD). This dysfunction is a result of neurodegeneration within the olfactory bulb (OB), the first processing area of the central olfactory system, and commonly precedes the characteristic motor symptoms in PD by several years. Functional measurements of the OB could there...
Article
Full-text available
Significance Whether an odor's perceived valence induces an approach response or triggers avoidance is critical for survival, and yet little is known about the neural mechanisms supporting this decision. Using electrophysiological measures from the human olfactory bulb (OB), the first processing stage of the olfactory system, and measures of full-b...
Article
Full-text available
More than 50 years ago, it was proposed that breathing shapes pupil dynamics. This widespread idea is also the general understanding currently. However, there has been no attempt at synthesizing the progress on this topic since. We therefore conducted a systematic review of the literature on how breathing affects pupil dynamics in humans. We assess...
Preprint
Full-text available
More than fifty years ago it was proposed that breathing shapes pupil dynamics [7, 16]. This widespread idea is also the general understanding currently. However, there has been no attempt at synthesizing the progress on this topic since. We therefore conducted a systematic review (preregistered on Prospero; ID CRD42022285044) of the literature on...
Preprint
Full-text available
Determining the valence of an odor to provide information to guide rapid approach-avoidance behavior is thought to be one of the core tasks of the olfactory system, yet little is known of its initial neural mechanisms or subsequent behavioral manifestation in humans. In two experiments, we measured the functional processing of odor valence percepti...
Article
Full-text available
Background Anorexia nervosa (AN) is a severe disorder, for which genetic evidence suggests psychiatric as well as metabolic origins. AN has high somatic and psychiatric comorbidities, broad impact on quality of life, and elevated mortality. Risk factor studies of AN have focused on differences between acutely ill and recovered individuals. Such com...
Article
Full-text available
: Noise from city traffic is one of the most significant environmental stressors. Natural soundscapes, such as bird songs, have been suggested to potentially mitigate or mask noise. All previous studies on masking noise use self-evaluation data rather than physiological data. In this study, while respondents (n = 117) watched a 360° virtual reality...
Article
Full-text available
Chemosignals are used by predators to localize prey and by prey to avoid predators. These cues vary between species, but the odor of blood seems to be an exception and suggests the presence of an evolutionarily conserved chemosensory cue within the blood odor mixture. A blood odor component, E2D, has been shown to trigger approach responses identic...

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