Expectation Effects on Emotional Processing
This research is exploring how what you expect and what you've experienced before can change how your brain handles emotions. It's especially interested in how positive expectations might lead to feeling better and being more accurate at recognising happy facial expressions. The study will involve healthy adults who will use a saline nasal spray, told to be a special treatment, and then have brain scans (fMRI) while they complete a task where they classify emotions. The goal is to understand the brain's internal workings behind these 'expectation effects,' which could offer valuable insights into new treatments for mood problems in the future. The researchers want to see how these expectations show up in different parts of the brain involved in seeing faces and feeling emotions.
At a glance
What is this study about?
This study is designed to help us understand a really interesting aspect of our brains: how our expectations and past experiences can actually change the way we process emotions. For example, have you ever noticed how believing something will make you feel better can sometimes actually happen? This is part of what researchers call the 'placebo effect,' and it's not just about medicines; it can affect our emotions too.
Researchers already know that what we expect can influence our emotional experiences. This study wants to go a step further by looking at how both our conscious thoughts and more automatic reactions (based on what we've learned) play a role. They'll use a harmless saline nasal spray, but participants will be told it's a treatment. They'll then see how this expectation affects their mood and how well they recognise happy faces. By using special brain scans called fMRI, the scientists can watch which parts of the brain are active during these tasks.
The main goal is to figure out the exact brain processes involved when our expectations change our emotional world. This knowledge is really important because it could eventually help develop new and better ways to treat mood disorders, like depression, by understanding how to harness the power of positive expectations.
Key takeaways
- The study explores how expectations affect emotional processing.
- Healthy adults aged 18-35 are needed.
- It involves brain scans (fMRI) and a saline nasal spray.
- Researchers hope to find new ways to help people with mood disorders.
- Participation includes a screening day and two study days.
- This is a research study, not a medical treatment.
Who may be eligible?
This study is looking for healthy adults between 18 and 35 years old. You'll need to be able to speak German and have good eyesight (either naturally or with glasses/contact lenses). It's also important that you are comfortable with MRI scans, as these will be a key part of the study.
There are certain reasons why you wouldn't be able to join. These include if you're currently taking certain medications that affect your brain, if you have a history of serious mental health conditions or brain illnesses, or if you're pregnant or breastfeeding. You also can't have certain medical conditions or objects in your body that aren't safe for an MRI scanner, like pacemakers. If you don't believe in the idea of the treatment during the initial screening, you won't be able to participate in the main study.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Are you between 18 and 35 years old?
- Can you speak German fluently?
- Are you comfortable with MRI scans (no claustrophobia or metal in your body)?
- Do you have good eyesight (with or without glasses/lenses)?
- Have you *not* had serious mental health or brain conditions in the past?
- Are you *not* currently taking medications that affect your brain?
What does participation involve?
If you decide to take part, the study will involve three visits. The first visit is a screening day where your eligibility will be checked. On this day, you'll also be given a saline nasal spray (which will be presented as a treatment) and your expectations will be carefully guided. You'll also complete some questionnaires about your background, education, past treatment experiences, and your current mood.
After a successful screening, there will be two separate study days where you'll come in for brain scans (fMRI). On these days, you'll perform a task where you classify emotions on faces, while your brain activity is monitored. The study will look at your responses both when you have positive expectations and when you don't. The total duration of your involvement will be spread across these three visits.
Potential risks and benefits
Locations (1)
- University Medical Center Hamburg-Eppendorf, Institute of Systems NeuroscienceVerified postcodeHamburg, Germany
Common questions
What is an fMRI scan?
An fMRI (functional Magnetic Resonance Imaging) is a special type of brain scan that takes detailed pictures of your brain. It helps researchers see which parts of your brain are active when you perform certain tasks, without using X-rays or radiation.
Will I be given any real medication?
No, you will only receive a saline (saltwater) nasal spray. The study is about how your expectations, not the actual spray, affect your emotions.
Will I know if my expectations improve my mood?
The study aims to understand how expectations work at a group level. Individual results won't be shared in a clinical sense, but you'll be contributing to valuable scientific knowledge.
How long will each study day be?
The information doesn't specify exact times for each day, but typically fMRI sessions can last an hour or more, plus time for other tasks and breaks. You'd need to discuss this with the study team.
Is this study meant to treat a medical condition?
No, this is a research study to understand basic brain processes. It is not designed as a treatment for any medical condition.
How to find out more
Stefanie Brassen, Prof. Dr.
Always speak to your GP or specialist before deciding to take part in a study.
Interested in taking part?
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