The use of ultra-violet setting glue for microelectrode fabrication
Abstract The characteristics of glues which set in ultra-violet light are described with respect to their advantages for microelectrode assembly.
An apparatus for the assembly of a combined single barrel recording electrode and a multibarrelled micropipette
In order to impale cells lying in deeper structures of the brain with 'parallel' multibarrelled electrode, we designed a new apparatus for the assembly of a multibarrelled micropipette and a single barrel recording electrode. This device greatly simplifies the procedure of constructing electrodes with shafts of approximately 15-20 mm in length even if the multibarrelled micropipettes are pulled with a slightly curved shaft and the bend made near the base of the shaft is not exactly to the specified angle. Electrodes of this type greatly improve the size and stability of the extracellularly recorded units from the caudate nucleus.
Synapses in the rat substantia nigra.
The composition and organization of the input to the rat substantia nigra were studied with the electron microscope. Four distinct types of synaptic boutons were described. The first contained small (381 A), clear synaptic vesicles. The second type contained the small, clear vesicles and several large, dense-core vesicles. The third ending contained large, dense-core vesicles and larger (581 A) clear vesicles. The fourth ending, found on the axon hillock and other terminal boutons, contained slightly elongated, clear synaptic vesicles. The presence of these four boutons was discussed in light of the known afferent input and neurochemical composition of the substantia nigra.