Unbalanced: A View from the Vestibule Schizophrenia and Hyperattention
Simeon Locke
Language: English
Pages: 144
ISBN: 9814299626
Format: PDF / Kindle (mobi) / ePub
The symptoms of schizophrenia have generated interest for more than two centuries. How are they produced? Where do they come from? In this highly stimulating book, Dr Locke proposes a new basic mechanism to account for many of the findings in schizophrenia. His ideas are based on observations and experiments at a State Psychiatric Hospital where he was the director of a Neurological Unit for ten years. He was struck by an outstanding sign of schizophrenia which had not attracted attention in the classical literature. Schizophrenia patients, he noticed, were too alert, too attentive. If this hyperawareness or widespread unfocussed attention is the result of excessive arousal, Dr Locke reasoned it would make sense to look into the vestibular system which is alleged to be one of the most effective contributions to the ascending reticular activation system. This original view of schizophrenia is attractive because it is creative, supported by a wide range of evidence and above all testable. Unbalanced: A View From the Vestibule will be of interest not only to psychiatrists, neuroscientists and mental health workers, but also to anyone interested in how the human mind works.
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Upward or downward gaze or of convergence or of accommodation. Oculogyric crises are noted. Wilson’s sign is that conjugate lateral movement is possible only when the eyes are blinked. Saccadic eye movements, says Smith, are simply ocular manifestations of cogwheeling, a term used to describe the rigidity of limb, and the disturbance of saccadic eye movement is thought to be a manifestation of bradykinesia.70 Vertical supranuclear gaze palsy and eyelid apraxia is associated with pathological.
Peripheral and a central lesion. There is apparent movement not entirely dependent on nystagmus, with transformation from one plane to another. Polyopia and micropsia, homolateral to a central vestibular lesion are also noted. The postural model of the body is under vestibular influence. Heaviness and lightness or dissociation of a body part may occur. Perceptual changes are often induced by motion so the patient may limit movement. It is suggested that catatonic immobility may ensue.112 Changes.
10:15 AM b1052 54 Page 54 Unbalanced: A View from the Vestibule Unbalanced: A View from the Vestibule Glenn Gould. Interpretation is not perception, but it influences future perception. Apperception is perception of new experience in the context of earlier experience. In the hyperattentive state, distinctive features may get blurred, attention may be directed to non-distinctive as well as distinctive features. There may be too much information. One way to handle information overload is by.
Evident not only from their behavior — the scraps of visual input that get incorporated into spontaneous speech — but also from the dark–light ratio of talk. If the hallucinations are a response to external stimuli, we should have expected visual hallucinations — so prominent in other disorders as well as in normals — rather than auditory, to occur. If internally produced where do the hallucinations arise? Any decision is speculative for wherever in the auditory pathways they begin, they.
Responses in all cortical areas… Specific responses have a constant and short latency… nonspecific responses have a variable long latency… and often persists for a long time after the end of the stimulus. Most neuronal responses to vestibular stimuli… are of this nonspecific type.”195 The speculation is that feedback from the reticular formation by the vestibular efferents can amplify or reduce (depending on whether positive or negative feedback) the vestibular afferent output, causing heightened.