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The paper presents characteristics of evoked potentials appearing in response to afferent stimuli in the dolphin visual and auditory cortical areas. Both the visual and auditory areas are divided into zones which generate evoked potentials different in form and temporal parameters. They may be regarded as multiple projection zones of the visual and auditory(More)
Using the evoked potential technique, studies have been made on localization of the projectional sensory areas in the cerebral cortex (visual, acoustic and somatosensory) of the porpoise T. truncatus. Distribution of these projectional areas in the porpoise is quite different as compared to that in other mammals. Visual and acoustic areas are shifted to the(More)
Evoked potential (EP) recordings in the auditory cortex of the porpoise, Phocoena phocoena, were used to obtain data characterizing the auditory perception of this dolphin. The frequency threshold curves showed that the lowest EP thresholds were within 120-130 kHz. An additional sensitivity peak was observed between 20 and 30 kHz. The minimal EP threshold(More)
Somatotopic projections in the cerebral cortex of the fur seal (Callorhinus ursinus) were determined by microelectrode recordings of the multiple unit activity. Somatosensory cortical area is restricted rostrally by postcruciate and coronal sulci, caudally by anterior suprasylvain sulcus and dorsomedially by ansate sulcus. The somatotopic map in this area(More)
A new Robertsonian translocation was found in 7 animals of the Grey Ukrainian breed. The translocated chromosome, analyzed by GTG-and RBG-banding, resulted from the fusion of chromosomes 8 and 23. C-banding suggested that the trans-located chromosome has a double heterochromatic block. Synaptonemal complex analysis was performed using electron microscopy.(More)
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