The present study aims to investigate the relationship between interoceptive accuracy and loneliness in the elderly population. Because of the negative consequences of atypical (too low or too high) interoceptive accuracy and the negative consequences of loneliness, an investigation of how these two constructs are linked to and might interact with each other is of major relevance. By combining two large areas, the one of loneliness and the one of interoception, which are both of great psychological interest, we intent to close a gap within the current research literature. Results might give us new insights into the perception (interoeptive and exteroceptive) of lonely persons.
Loneliness is described as an unpleasant feeling of deficits in quantity or quality of social ties. Prior studies observed that lonely individuals displayed higher levels of alexithymia (emotional blindness). Furthermore, research in the field of interoception (the perception of the bodily state) discovered atypically low interoceptive abilities within highly alexithyimic individuals. Based on previous findings, we expected lonely individuals to show decreased levels of accurate interoceptive abilities together with reduced neural activity within the anterior insula, the somatosensory cortex (postcentral gyrus), the inferior frontal gyrus and the precentral gyrus. Brain areas previously associated with accurate interoceptive abilities. The data for the present fMRI study were collected within a sample of 28 participants older than 64 years. The extent to which a participant is capable of perceiving his/ her own bodily sensations (interoceptive accuracy) was measured via a heartbeat tracking task, during which the subject was required to perceive his/ her own heart rate and report the counted number of heartbeats. Additionally, several questionnaires, assessing loneliness, trait anxiety, depression and alexithymia, were administered and analysed.
Table of Contents
Introduction and Theoretical Background
Loneliness in the Elderly Population
Loneliness and Alexithymia
Interoceptive Accuracy
Interoceptive Accuracy and Alexithymia
Limitations of Prior Research
Aim of the study and hypothesis
Methods
Participants
Measures
Sociodemographic Information
Loneliness
Anxiety
Depression
Alexithymia
Interoceptive Accuracy
fMRI Data Acquisition
Study procedure
Data Analysis
Behavioral and Statistical analysis
fMRI analysis
Results
Behavioral results
Descriptive Statistics
Correlational Analysis
Analysis of Variance
Analysis of Frequency
fMRI results
Main effect of condition
Interaction loneliness x condition
Discussion
Research Objectives & Topics
The primary objective of this study is to investigate the relationship between interoceptive accuracy and loneliness in the elderly population using fMRI to observe associated neural activities. The research examines whether lonely individuals exhibit lower interoceptive accuracy and distinct neural activation patterns compared to non-lonely seniors, potentially bridging a gap in existing literature regarding how these constructs interact.
- Link between loneliness and interoceptive accuracy in the elderly.
- Neurophysiological evidence of interoceptive processing via fMRI.
- Analysis of cognitive and emotional factors (alexithymia, depression, anxiety).
- Evaluation of neural activity in brain regions associated with interoceptive accuracy (e.g., insula, somatosensory cortex).
Excerpt from the Thesis
Loneliness in the Elderly Population
Loneliness is described as a distressing emotion accompanied by the subjective perception that one’s needs of social companionship are not being met in light of the quality or quantity of one’s actual relationships (Hawkley & Cacioppo, 2010; Peplau & Perlman, 1982). Cacioppo (e.g., 2014) denominates loneliness as perceived social isolation (PSI) and delimits the construct from objective social isolation (OSI). Accordingly, there can be people who have many social contacts (are objectively not lonely) but feel subjectively lonely, whereas there can also be those who lack social companionship and, conversely, not feel lonely.
However, the prevalence of loneliness seems to differ across nations and age (Yang & Victor, 2011). In the German population, loneliness is proposed to form a non-linear trajectory across the lifespan with increased levels of loneliness among the young adults and the oldest old (Luhmann & Hawkley, 2016).
Primary reasons for the occurrence of loneliness among older adults are considered deteriorating health as well as the loss of one’s partner (Perlman, 1988).
Summary of Chapters
Introduction and Theoretical Background: Defines loneliness, interoception, and alexithymia, establishing the theoretical framework and the study's specific hypotheses regarding their interconnections.
Methods: Details the recruitment of 28 elderly participants, the specific psychological measures used (UCLA-LS, STAI-T, BDI-II, TAS-20, MMSE), and the experimental fMRI heartbeat tracking design.
Results: Presents the statistical behavioral findings and the fMRI data, including correlations between variables and the neural differences observed between lonely and non-lonely groups during task execution.
Discussion: Interprets the findings in the context of prior research, acknowledges study limitations such as sample size, and suggests implications for future investigations into the 'p factor' of psychopathology.
Keywords
Interoceptive Accuracy, Loneliness, Alexithymia, fMRI, Seniors, Heartbeat Tracking Task, Insula, Somatosensory Cortex, Older Adults, Neural Activity, Depression, Anxiety, Emotional Processing, Social Isolation, Perceived Social Isolation
Frequently Asked Questions
What is the core focus of this Master's thesis?
The thesis focuses on the relationship between loneliness and interoceptive accuracy in the elderly population, analyzing both behavioral perception scores and underlying neurophysiological responses measured via fMRI.
What are the central themes discussed in the work?
Key themes include the psychological constructs of loneliness and alexithymia, the physiological perception of bodily states (interoception), and their manifestation in the brain, particularly in the elderly.
What is the primary aim or research question?
The primary aim is to determine if lonely elderly individuals show decreased interoceptive accuracy and reduced neural activity in specific brain regions, such as the anterior insula and somatosensory cortex, during heartbeat perception tasks.
Which scientific methods were applied?
The study utilized a heartbeat tracking task for behavioral assessment, administered established clinical questionnaires for psychiatric constructs, and conducted fMRI scanning for neuroimaging, analyzed with SPSS and SPM 12.
What topics are covered in the main section?
The main sections cover the background of loneliness and alexithymia, the definitions of interoceptive accuracy, the methodology of fMRI data acquisition, and the resulting statistical and neuroimaging analyses.
Which keywords best characterize this research?
The research is best characterized by terms such as Interoceptive Accuracy, Loneliness, Alexithymia, fMRI, and Seniors.
How was loneliness defined and categorized for this research?
Loneliness was measured using the third version of the UCLA Loneliness Scale, with a mean split performed on the sample to categorize participants into 'lonely' and 'non-lonely' groups.
What were the main findings regarding neural activity?
The study found that non-lonely participants exhibited significantly greater activation in several brain areas, including the insula and precentral gyrus, compared to lonely participants during the heartbeat perception task.
What limitations does the author address?
The author highlights the small sample size, the explorative nature of the research, the challenges of MRI-scanner noise affecting heartbeat perception, and the necessity for a broader age range in future studies.
- Quote paper
- Anonym (Author), 2018, Loneliness and Interoceptive Accuracy in the Elderly Population, Munich, GRIN Verlag, https://www.grin.com/document/1106347
