早产高胆红素血症患儿脑干听觉诱发电位测听的临床意义

检测分析早产高胆红素血症（HB）患儿脑干听觉诱发电位测听（BAEP）指标。连续选择近期在我院住院的早产HB患儿176例,入选对象治疗前接受了BAEP检测。胎龄较短、分娩体重较轻、日龄较小和血清高浓度早产儿BAEP检测通过耳数、通过率均明显少于胎龄较长、出生体重较重、日龄较大和胆红素较低浓度旱产儿组（P均〈0．05）。不...     

Brain stem electrical responses of stutterers and normals by sex,ears, and recovery

Auditory brainstem electrical responses (BSER) of right and left ears of active stutterers, recovered stutterers, and nonstutterers, both male and female adults, were obtained at click rates of 11.1 and 71.1/sec. Latency intervals of waves I, III, and V were measured. The auditory systems of subjects were stressed using a rapid rate of 71.1 clicks/sec. The latency of wave V was used as the measure of the stress condition.Analysis of variance was used to determine statistical significances of main effects and interactions of mean BSER (waves I, III, V, and wave V in stress condition) of left and right ears of male stutterers (active and recovered), female stutterers (active and recovered), and male and female nonstutterers.With one exception, all main effects and all higher order interactions were nonsignificant. The one main effect that was significant was gender. Females have significantly faster rates of neural transmission than do males. The question was raised, does this finding contribute toward an explanation of the sex ratio in stuttering?     

Unusual course of necrotizing encephalitis

It is reported on a girl with a chronic encephalitis leading to death after 8 years. The course had first been typical for subacute sclerosing panencephalitis, but autopsy showed lesions of the brain typical for herpes simplex encephalitis.     

The Storytelling Brain

The well-established techniques of the professional storyteller not only have the potential to model complex ??truth?? but also to dig deeply into that complexity, thereby perhaps getting closer to that truth. This applies not only to fiction, but also to medicine and even science. Compelling storytelling ability may have conferred an evolutionary survival advantage and, if so, is likely represented in the neural circuitry of the human brain. Functional imaging will likely point to a neuroanatomical basis for compelling storytelling ability; this will presumably reflect underlying cellular and molecular mechanisms.     

The Predictive Brain

During the lengthy and complex process of human evolution our ancestors had to adapt to extremely testing situations in which survival depended on making rapid choices that subjected muscles and the body as a whole to extreme tension. In order to seize a prey traveling at speeds that could reach 36 km per hour Homo sapiens had just thousandths of a second in which to anticipate the right moment and position himself before the prey arrived. He also had to prepare the appropriate gesture, tensing his muscles and overcoming the resistance determined by body weight. While we are no longer faced with an environment that is anything so threatening, our brain continues to use these mechanisms day in day out to save time and energy, enabling us to avoid situations of danger, sense in advance the intentions of an interlocutor, and more besides. In this article we set out to show that our brain is not only a reactive mechanism, capable of reacting quickly to the stimuli that arrive from the external environment, but is above all a pro-active mechanism that allows us to make hypotheses, anticipate the consequences of actions, and formulate expectations: in short, to wrong foot an adversary.     

认识脑死亡

脑死亡是指脑功能永久性不可逆的完全丧失,而不考虑呼吸心跳是否停止.目前脑死亡临床诊断标准已具有高度准确性.脑死亡的确立对树立新的道德观念、节约社会资源、促进器官移植发展意义重大,但要在中国立法可能还需要一个漫长的过程.     

脑激活定律

用物理学的观点在系统水平上讨论脑内功能子系统的脑区激活及相互作用。引入一些参量描述脑功能特性 ,并且根据现有实验事实提出脑激活的四条定律。     

Sleep and the Brain

Sleep is a fundamental behavior ubiquitous in the animal kingdom, necessary for the support of physical health and in humans for the maintenance of cognitive function. While it influences all body systems, it is particularly important for the brain and is typically characterized using measures of brain electrical activity. Sleep undergoes predictable changes across the lifespan, with notably dramatic alterations occurring during adolescence and with old age. Over and above the normal development changes, however, upwards of a third of the adult population experience some form of insomnia on a regular basis. This issue’s special section on “Sleep through the Ages” contains papers addressing the neurological and neuropsychological implications of sleep in adolescents, older adults and insomnia sufferers, highlighting relations of sleep with brain structure and function.     

Brain parasites and suicide

In a sample of 20 European nations, the prevalence of the brain parasite Toxoplasma gondii was positively associated with national suicide rates for men and women.