PubMed · 14083987
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
A GAYLARD, S W TATE, P BELL. 1963. PERCEPTUAL-MOTOR DYSFUNCTION. 1.. https://doi.org/10.1177/000841746303000401
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
OBJECTIVE AND IMPORTANCE: Supernumerary phantom limb (SPL) is extremely rare. Literature reports noted 17 cases that occurred after right cerebral hemispheric stroke and 2 cases that occurred after left cerebral hemispheric stroke, but without imaging diagnoses. CLINICAL PRESENTATION: A 45-year-old male patient complained of SPLs on the right side after recurrent left thalamic hemorrhage. Computed tomography and magnetic resonance imaging demonstrated the lesion causing the left hemispheric stroke. INTERVENTION: The patient was treated conservatively. Computed tomographic scans demonstrated that the lesion had disappeared by 15 days after admission. The sensation of SPLs disappeared after 28 days. CONCLUSION: SPL may occur among patients with left hemispheric stroke, especially those with lesions in the thalamus, spastic paresis on the right side immediately after stroke, and psychiatric disorders such as alcohol and tobacco intoxication.
BACKGROUND: Effective patient-physician communication requires the use of words that are clearly understood by both parties. We conducted this study to compile a list of words used by children and caregivers to describe "private" anatomical structures and physiological functions, to document the frequency of such usage and to examine the relation between correct word usage and caregiver's level of education. METHODS: In a large urban pediatric emergency department, a convenience sample of 156 children at least 3 years old were asked to name the body parts (penis, testes, vagina, buttocks, breasts) pointed to in 4 simple, explicit line drawings of an unclothed boy or girl, and to name the bodily functions (vomiting, defecation, urination) depicted in 3 drawings of children. Eighty-seven patients sufficiently fluent in English were included in the study. Their caregivers were asked separately what words they currently use with their child and with other adults for these body parts and functions and what words they remembered using as children. RESULTS: The children used a mean of 1.2 correct anatomical and physiological terms out of a possible 8 to describe the private parts and functions in the drawings. The mean number of correct words used by the caregivers was 2.3 when talking with their children, 3.6 when talking with their peers and 1.5 when they were children. There was no correlation between the caregiver's level of education and the frequency of correct word usage by their children. We identified slang words used by at least 5% of the respondents; however, some used the same slang words to refer to different body parts. INTERPRETATION: Given the variety of slang words used by children and their caregivers to describe private parts and functions, the meaning of the words should be clarified during history taking.
During an out-of-body experience (OBE), the experient seems to be awake and to see his body and the world from a location outside the physical body. A closely related experience is autoscopy (AS), which is characterized by the experience of seeing one's body in extrapersonal space. Yet, despite great public interest and many case studies, systematic neurological studies of OBE and AS are extremely rare and, to date, no testable neuroscientific theory exists. The present study describes phenomenological, neuropsychological and neuroimaging correlates of OBE and AS in six neurological patients. We provide neurological evidence that both experiences share important central mechanisms. We show that OBE and AS are frequently associated with pathological sensations of position, movement and perceived completeness of one's own body. These include vestibular sensations (such as floating, flying, elevation and rotation), visual body-part illusions (such as the illusory shortening, transformation or movement of an extremity) and the experience of seeing one's body only partially during an OBE or AS. We also find that the patient's body position prior to the experience influences OBE and AS. Finally, in five patients, brain damage or brain dysfunction is localized to the temporo-parietal junction (TPJ). These results suggest that the complex experiences of OBE and AS represent paroxysmal disorders of body perception and cognition (or body schema). The processes of body perception and cognition, and the unconscious creation of central representation(s) of one's own body based on proprioceptive, tactile, visual and vestibular information-as well as their integration with sensory information of extrapersonal space-is a prerequisite for rapid and effective action with our surroundings. Based on our findings, we speculate that ambiguous input from these different sensory systems is an important mechanism of OBE and AS, and thus the intriguing experience of seeing one's body in a position that does not coincide with its felt position. We suggest that OBE and AS are related to a failure to integrate proprioceptive, tactile and visual information with respect to one's own body (disintegration in personal space) and by a vestibular dysfunction leading to an additional disintegration between personal (vestibular) space and extrapersonal (visual) space. We argue that both disintegrations (personal; personal-extrapersonal) are necessary for the occurrence of OBE and AS, and that they are due to a paroxysmal cerebral dysfunction of the TPJ in a state of partially and briefly impaired consciousness.