impaired concentration
Conditions
Interventions
Control group:Spend 30 minutes in the laboratory quietly reading a magazine with neutral content, without exposure to any audiovisual media.
Experimental Group:The plan is to recruit 30 eligible university students from the questionnaire group, with all participants completing three experimental sessions.
Sponsors
Fudan University
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: Questionnaire Group (Participants must meet all of the following criteria) 1. Full-time undergraduate or postgraduate students currently enrolled at Fudan University, aged between 18 and 30; 2. Able to understand and voluntarily complete the online questionnaire, and willing to sign a written informed consent form; 3. Self-report no diagnosed severe cardiovascular diseases (e.g. coronary heart disease, severe arrhythmia), neurological disorders (e.g. epilepsy, post-traumatic brain injury sequelae), mental disorders (e.g. schizophrenia, bipolar disorder) or severe chronic physical illnesses. Experimental group (participants must meet all of the following criteria) 1. Eligibility and basic requirements: Full-time undergraduate students currently enrolled at Fudan University, aged between 18 and 30. Able to fully understand the purpose, procedures and potential risks of this study, and willing to sign a written informed consent form; 2. Health Status Self-reported absence of diagnosed severe cardiovascular diseases (e.g. coronary heart disease, severe arrhythmia), neurological disorders (e.g. epilepsy, post-traumatic brain injury sequelae), mental disorders (e.g. schizophrenia, bipolar disorder) or severe chronic physical illnesses. Normal vision or hearing (after correction), sufficient to clearly view videos and hear instructions; 3. Lifestyle and Status: Participants must report that they do not work shifts or night shifts, and must not have travelled across time zones within 2 weeks prior to the start of the study. No history of chronic alcohol abuse or substance abuse; 4. Medication and Substance Use Within 2 weeks prior to the start of the study, no regular use of any medication that may significantly affect the central nervous system, cognitive function, mood, or autonomic nervous system activity (including but not limited to: sedatives/hypnotics, antidepressants, anxiolytics, psychostimulants (e.g., medications for ADHD), beta-blockers, corticosteroids, etc.). Agreement to avoid alcohol, caffeine and energy drinks for 24 hours prior to each experiment, and to avoid strenuous exercise for 2 hours prior to the experiment; 5. Digital Media Use: To maintain ecological validity, regular users of digital media are not excluded. However, it is required that the average daily total recreational screen time (including short videos, live streaming, social media, gaming, etc.) over the past month has been between 1 and 6 hours, to avoid including individuals with extremely low or extremely high exposure; 6. Compliance: Able and willing to arrive at the laboratory at the designated time in accordance with the study protocol to complete the entire experimental procedure, and to cooperate with the wearing of relevant monitoring devices.
Exclusion criteria
Exclusion criteria: Questionnaire group (exclusion criteria: meeting any of the following criteria) 1. History of clinically diagnosed attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder or other neurodevelopmental disorders; 2. inability to complete the questionnaire independently due to language, cognitive or other reasons. Experimental group (exclusion criteria: meet any one of the following) 1. Health and psychological risks In the questionnaire, a total score of >=10 on the Patient Health Questionnaire Depression Scale (PHQ-9) or a total score of >=10 on the Generalised Anxiety Disorder Scale (GAD-7), indicating moderate or severe depressive or anxiety symptoms; self-reported suicidal ideation or a history of suicide attempts; History of clinically diagnosed Attention-Deficit/Hyperactivity Disorder (ADHD), Autism Spectrum Disorder or other neurodevelopmental disorders; 2. Extreme Digital Media Use Based on the baseline questionnaire, self-reported average daily recreational screen time in the past month = 6 hours (classified as an extreme high-exposure user, whose physiological and cognitive response patterns may have undergone adaptive changes); Self-reported strong aversion to or addictive use of specific digital media formats relevant to the study (e.g. short videos) (screening may be conducted using tools such as the Brief Social Media Addiction Scale); 3. Experiment-related factors: History of motion sickness, or reporting significant discomfort such as dizziness or nausea whilst watching videos during pre-experimental trials; Severe skin conditions at the site where the Polar H10 heart rate strap is worn, or an allergy to the electrode gel; The research team determines that the participant may be unable to follow experimental instructions or cooperate in completing cognitive tasks (e.g. due to comprehension difficulties or language barriers); 4. Data integrity During the experiment, a loss of more than 20% of key data (e.g. HRV, PVT) due to equipment failure, participant non-cooperation, or other reasons; Actively requesting to withdraw from the study midway.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Inhibition control function;Sustained attention;Heart rate variability; | — |
Secondary
| Measure | Time frame |
|---|---|
| Sleep;Immediate craving;Emotional state;Video immersion; | — |
Countries
China
Contacts
Public ContactLiang Sun
Fudan University
Outcome results
None listed