Gruenau S P, Shurley J T
Dev Psychobiol. 1976 Sep;9(5):477-93. doi: 10.1002/dev.420090510.
Visual evoked responses (VER'S) were recorded from the cortex of immature Weddel seals, 3-365 days of age. Results indicated a high degree of maturity at birth evident from the multiphasic array of waveforms and the comparatively short onset latency of the VER. At low intensities, single flashes evoked an immature secondary response. Topographical distribution of VER's were confined largely to the gyrus immediately adjacent to midline, from the posterior aspect near lambda to the vertex. Recordings from CI-744 dosed seals displayed a well-demarcated developmental sequence of VER's, contrary to VER's recorded in flaxedilized seals. Onset latency and waveform configuration changed concomitantly as a function of age. During the postnatal period from birth to weaning, VER changes were related to major behavioral events such as the seal's first encounter with swimming and diving at 2 weeks of age and weaning at 6 weeks of age.
对3至365日龄的未成熟威德尔海豹的大脑皮层进行了视觉诱发电位（VER）记录。结果表明，从多相波形阵列和相对较短的VER起始潜伏期可以明显看出，海豹出生时具有高度的成熟度。在低强度下，单次闪光会诱发不成熟的二次反应。VER的地形分布主要局限于紧邻中线的脑回，从靠近人字点的后部到头顶。与在氟烷麻醉的海豹中记录的VER相反，对服用CI-744的海豹的记录显示出VER有明确的发育序列。起始潜伏期和波形配置随年龄而变化。在出生后到断奶的时期，VER的变化与主要行为事件有关，例如海豹在2周龄时首次接触游泳和潜水，以及在6周龄时断奶。
