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8
Behavior, Aging, and the Nervous System
RESULTS
Our sample consisted of 86 persons ranging from 14 to 67 years of age (Table 1). The average latency period in these subjects
| TABLE 1 Age Of Subjects Used In This Experiment | |
| Age in Years | No. of Subjects |
| 14-20 | 15 |
| 21-30 | 17 |
| 31-40 | 10 |
| 41-50 | 22 |
| 51-60 | 20 |
| 61+ | 2 |
| N=86 | |
was 0.252 second, with a range from 0.214 to 0.314 second (Figure 7). It should be noted that the true latency periods are somewhat shorter than the values indicated in this communication. The latency period as determined in this experiment was the time interval from the start of stimulation to the moment when pupillary contraction had reached a speed of 3.5 mm. per
 |
| Figure 7. Scattergram of average pupil latency periods by age. |
