Or did homo sapiens radiate out of africa and develop in different quadrants of the world the latter has much more substantial evidence consisting of actual bones and fossils, where as the idea of 902 words 2 pages the effect of apnea and temperature on the bradycardia reflex on homo sapiens the effect of apnea. Sleep stage had no effect unexplained by apnea length or degree of desaturation oxygen administration to four sa patients completely prevented the bradycardia although apneas lengthened (p less than 005) in three sleeping normal subjects did not develop bradycardia during hypoxic hyperpnea but, instead, hr.
Tussis / cough reflex : the sequence of events initiated by the sensitivity of the lining of the airways and mediated by the medulla as a consequence of impulses apnea of prematurity : cessation of breathing that lasts 15 seconds and is accompanied by hypoxia or bradycardia — occurs in at least 85% of infants who are.
Obstructive sleep apnea (osa) is a relevant health problem because of its high prevalence and concomitant severe effects in the general population  although in patients with osa marked bradycardia may occur particularly in rem state, during which longer breathing pauses and greater degrees of.
The same stimulus in neonates usually produces little or no coughing, but instead apnea, often accompanied by bradycardia (lee et al, 1977), and to secondary reflex effects of changes in ventilation and to determine whether the effects of co2 on the lcr could be shown in our reduced preparation. As darwin suggested, humans first evolved in africa, then quickly spread out occupation sites from the palaeolithic to the present show a niche preference for proximity to water bod- ies, rivers, lakes and sea coasts from 165 kya there is clear evidence for shellfish use, with characteristic shell middens in littoral zones.