How does an atom become a positively charged lon?
oa by gaining one or more electrons
ob. by gaining one or more neutrons
oc. by losing one or more electrons
od. by losing one or more neutrons
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The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later