Positron emission tomography (PET)

 

Describe positron emission tomography (PET) and explain how it can be useful in the study of brain functioning.

Sample Solution

The next advancement in PK testing was the advent of computers, and with them random number generators, or RNG for short. Computers allowed us to get closer to generating something truly random. The first experiments with RNG consisted of a radioactive source whose output would be converted into bits and stored on a computer. Computers allowed for true randomness and extremely tight control over experimental conditions. RNG solved many of the problems with dice experiments, removed many of the human elements that could not be controlled reliably. The testing procedure consisted of a random source providing a stream of output to a computer in 1s and 0s. The participant would press a button triggering the computer to measure the current output of the random source, e.g. radioactive decay and record the data electronically alleviating any possibility of human tampering. Testing could also be done in large quantities and very quickly making data very easy to collect by means of RNG. Drift did need to be accounted for in the random sources, however. There was also one human aspect of the experiment that there would be no way to account for, which is stopping testing could be stopped as soon as the data reached a point of statistical significance. Proponents of PK had many issues with the use of RNG for testing PK. They argued that the power of PK is not able to be used on such a small level as the microscopic part of a computer and the quantum mechanics in place. However, with no better way for reliably recording accurate and controlled data RNG because the primary vessel for PK testing. There were still many issues regarding how the tests were performed. In the case of Dean Radin and Roger Nelson, they decided to be very inclusive in their trials testing for PK. Inclusive to the point of including cockroaches as participants in the test. When Radin’s ideas were challenged later on he stated in the conclusion of his re-analysis of psychokinesis that “the cumulative data are now sufficiently persuasive to advance beyond the timid conclusion of ‘not proven’ and that it is more fruitful to focus on understanding the nature of PK rather than to concentrate solely on the question of existence” (Radin, et al.). Radin also happened to be elected as President of the Parapsychological Association, whose purpose is, “to advance parapsychology as a science”, in 5 different years. Despite many others analyzing the data collected from many trials of PK experiments and finding much of the data to not suggest and proof of PK he insists that what he found in his 1991 Meta-Analysis of PK based on the falling of dice still stands true through new rounds of tests with RNG.

One may wonder why someone would even try to claim that they have E

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