摘要
大脑皮质中的突触与年龄、学习、经验和记忆密切相关。目前,在大脑皮质的研究中,对听觉皮质区突触超微结构的报导远远少于视皮质区和其他一些皮质区,在国内尚未见报导。本文用4例猫大脑听觉皮质区材料,共观察到1526个突触。在这些突触中,轴-棘突触占绝大多数,为所观察的突触总数的61.1%。根据不同的指标又将轴-棘突触分为许多种类型的突触,并对各种类型突触进行了统计。此外,本文对各种类型突触的机能意义进行了讨论,为进一步研究和探讨大脑皮质的复杂活动提供一些实验数据和对照参数。
The synapse in the cerebral cortex is related to age,learning,experience and memory.For the cerebral cortex,the number of the reports on the ultrastructure of the synapses in the auditory cortex is far less than that of the visual cortex and other cortical areas.Four cats were chosen in random and blocks of the auditory cortex were taken out and immersed in a fixative containing 2%paraformaldehyde and 2.5%glu-taraldehyde in 0.1M phosphate buffer at pH7.4,then postfixed in 1%osmium tetroxide in the same buffer,dehydrated in acetone and embedded in Araldite 618.The ultrathin sections were made by LKB-5 microtorne,stained in uranyl acetate and lead citrate and studied under a JEM-7 electron microscope.A total of 1529 syrtapses were observed in this experiment.The majority of the synapses were axo-spinous which covered 61.1%of the total of the synapses.The axo-spinous synapses were classified according to the different criteria,and the function of them discussed.
出处
《神经解剖学杂志》
CAS
1986年第1期155-160,181,共7页
Chinese Journal of Neuroanatomy
关键词
大脑皮质
听觉皮质区
突触
超微结构
树突棘
棘器
cerebral cortex
auditory cortex
synapse
ultrastructure
spine
spine apparatus
