2007
DOI: 10.1159/000111872
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Observations on Concussion

Abstract: The word ‘concussion’ has several meanings and applications that are controversial. This paper attempts to trace the historical origins and evolution of the descriptive classifications of concussive head injuries. It is suggested that head injuries should be described on the available evidence of the severity and duration of altered consciousness, traumatic amnesia and, when present, the variably associated neurological, physiological and imaging signs. The word concussion reflects an overenthusiastic trend in… Show more

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Cited by 27 publications
(10 citation statements)
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“…Pearce (2008), for example, defined clinical concussion -in humans-as 'a sequel of brain injury produced by acceleration (or deceleration) of the head and is characterized by a sudden brief impairment of consciousness, paralysis of reflex activity and loss of memory'. Definitions of 'concuss' and 'concussion' vary, but a common theme is some degree of loss of consciousness.…”
Section: Defining Termsmentioning
confidence: 99%
“…Pearce (2008), for example, defined clinical concussion -in humans-as 'a sequel of brain injury produced by acceleration (or deceleration) of the head and is characterized by a sudden brief impairment of consciousness, paralysis of reflex activity and loss of memory'. Definitions of 'concuss' and 'concussion' vary, but a common theme is some degree of loss of consciousness.…”
Section: Defining Termsmentioning
confidence: 99%
“…Blinking protects the corneal surface by allowing it to be remoistened and cleaned, and will vary with individual characteristics of the tear-film or whether an individual wears contact lenses or not (Ousler et al, 2008). Blinking can also function as a defensive reflex action that not only protects the corneal surface from incoming particles and potential physical injury, but is also elicited by startle (Pearce, 2008). Aside from these protective mechanisms for the cornea, changes in blinking behavior have been shown to occur as a function of non-ocular factors.…”
Section: Introductionmentioning
confidence: 99%
“…McCrory and Berkovic (12), Pearce (16), and Koehler and Wijdicks (9) have shown in their historical reviews that concussion and the temporary loss of consciousness due to head injury without a skull fracture were recognized and speculation about the mechanisms discussed since antiquity. These reviews do not refer, however, to subjective reports of patients who were concussed.…”
Section: Discussionmentioning
confidence: 99%