Is a toaster a conduction convention center or radiation fastest do tomorrow

It should be radiation.
Radiation is a flow of electromagnetic waves, and the toaster net emits radiation, by the coils in the toaster. At this point, the toast net absorbs radiation, and therefore gain heat.
Note that everything absorbs and emits heat all the time, but if the thing is colder than the environment, it's a net absorber. If hotter, it's a net emitter.

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