Most states of ASC can be measured by changes in hormonal level, basal temperature, immune system, brain physiology and functioning, blood pressure, pulse, pain control, anxiety reduction and so on. Repeated experiences of ASC often seem to be accompanied by changes in the shape of synaptic pathways, which can lead to addiction to the event or to changes in sensitivity levels (Kroll and Bachrach 2005, Kahneman 2011).
ASC can happen spontaneously but is mostly activated by special technologies or events. Various geographical and historical societies and cultures have knowledge of technologies producing ASC. Sometimes they are highly valued and integrated in central rites and rituals -attributed high positive use-value and symbolic value – at other times they are forbidden and repudiated. Drugs and alcohol are good examples of how cultural context varies in their acceptance and valuation. Around the time of Buddha, Northern India – unparalleled by almost any other civilisations – seems to have developed a wide and sophisticated range of ascetic-meditative technologies’ leading to ASC. Some groups began to call some of these technologies yoga’. This is where this book starts its story as it investigates the culture which surfaced in relation to yogic ASC.
Acetabulum The large spherical indentation in the pelvic bone that forms Yoga for seniors the pelvic side of the hip joint. Achilles bursitis See bursitis. Achilles tendonitis Inflammation of Yoga for seniors the Achilles tendon, generally occurring just above the heel bone, into which the tendon inserts, attaching the gastrocnemius and soleus muscles to the calcaneus. acromioclavicular joint The joint connecting the clavicle with the acromion, a superolateral boney projection of the scapula. Acromion A boney projection of the scapula, or shoulder blade, that joins it to the lateral clavicle, or collarbone. adduction Movement toward the midline, even crossing it. To touch one’s left shoulder with the right hand, one must adduct the right arm. ankle mortise The space between the distal ends of the tibia and fibula into which the uppermost bone of the foot, the talus, just fits.
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