Exploring factors associated with persistent postural-perceptual dizziness(PPPD): A mixed-methods approach

Gamble, Ryan 2022. Exploring factors associated with persistent postural-perceptual dizziness(PPPD): A mixed-methods approach. PhD Thesis, Cardiff University. Item availability restricted.

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Abstract

Persistent Postural-Perceptual Dizziness (PPPD) is a functional (non-organic), debilitating neuro-vestibular condition characterised by chronic episodes of visually induced dizziness (Bronstein, 1995; Staab et al., 2017). Symptoms are triggered by situations of visuo-vestibular conflict, intense visual environments and active and passive motion (Bronstein, 2004; Pavlou, 2010). PPPD is thought to develop due to an over reliance on vision for postural control mechanisms (Bronstein, 1995). The aim of this Thesis was to explore factors associated with PPPD. The aim of Chapter 2 was to explore how individuals with PPPD make sense of their symptoms and condition and to better understand the lived experiences of PPPD, including the psycho-social impacts of the condition. Findings suggest identity loss, dismissal and non-belief, poor psychological well-being, out of body experiences and processes of sense-making are factors associated with PPPD. Shared themes included poor metal well-being, sensory overload, sleep impairments and PPPD not affecting television/movie watching. The aim of Chapter 3 was to test if short-term exposure to optokinetic stimulation can produce changes in markers of visual dependence and to establish the promise of multi-media technology for producing recalibration effects. Findings suggest that passively viewing movies are the most effective optokinetic stimulus for recalibration effects. The aim of Chapter 4 was to explore the relationships between self-reported PPPD symptoms and performance on traditionally used laboratory measures of visual dependence in the non-clinical student and sub-clinical student populations. Findings suggest that PPPD symptoms do not correlate with levels of visual dependence. Furthermore, traditional measures of visual dependence also failed to correlate. Taken together, this Thesis provides the scientific community with a deeper understanding of factors associated with PPPD in clinical and non-clinical communities

Item Type:	Thesis (PhD)
Date Type:	Completion
Status:	Unpublished
Schools:	Psychology
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Date of First Compliant Deposit:	25 May 2022
Last Modified:	14 Dec 2022 02:28
URI:	https://orca.cardiff.ac.uk/id/eprint/150023

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