Search PubMed⌕ Search

Biomedical subjects

A M Mass

Publications and source records attributed to A M Mass.

27 records · Page 2Linked to original sources
PubMedDate not supplied

[Multiple sensory projections in the dolphin cerebral cortex].

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 analysers respectively.

Animals↗
PubMedDate not supplied

[Organization of the receptive fields of the superior colliculus neurons of the squirrel Sciurus vulgaris].

Studies have been made on the reaction of single neurons of the superior colliculus to stationary and moving visual stimuli in immobilized squirrels. The main bulk of collicular units (59%) is not directionally selective, 11%--exhibit high directional selectivity and 30%--were found to be relatively selective. Most of the cells (85%) "prefer" high speed of stimulus motion. Optimal speed for these neurons is equal to 30--100 degree/sec. Testing by a stationary light spot (0.5degree in diameter), reveals different structure of the receptive fields with various types of "on"-and "off"-inputs. Lateral inhibition was observed in the receptive fields with both uniform organization and separated "on" and "off" areas.

Animals↗