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Title: Unilateral neglect as "temporal diplopia"
Author: Budewig, Karen
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 2000
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This thesis presents a new model of unilateral neglect. The theory is based on novel empirical data collected in the current study which involved stroke patients with and without neglect. Halligan and Marshall (1992) have called for the exploration of "principles" of malfunction in neglect patients. In this thesis, we have provided such a principle. The core of the thesis is a new model of unilateral neglect, the "temporal diplopia" theory. It is strictly constrained by neuroanatomical and electrophysiological evidence. Our model claims that the underlying pathology in unilateral neglect is abnormal temporal integration and binding of information due to desynchronised neuronal activity. Disruptions in the temporal domain lead to impaired processing within the damaged hemisphere and between the two hemispheres. The empirical data presented in this thesis was interpreted as evidence for the "temporal diplopia" theory. We have provided support for the hypothesis that processing in the damaged hemisphere is slowed down by using a time perception, rhythm perception and inspection time paradigm. We have illustrated the explanatory power of our theory by unifying existing empirical evidence of neglect. Stimulus properties in neglect dyslexia were explored. Furthermore, we addressed the general 'binding' problem of body schemata and the disintegration of body schemata due to disrupted temporal neuronal processing. Our thesis is the first to investigate extensively the temporal aspects of information processing in unilateral neglect patients. Abnormal temporal processing appears to be a fundamental problem and it has been associated with a number of neurophysiological and psychiatric disorders such as dyslexia, dysphasia, autism and schizophrenia. Why temporal malfunction leads to different clinical pictures in different patient groups is a question that warrants future exploration.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available