Biomedical subjects
I Aleksander
Publications and source records attributed to I Aleksander.
An extension to the hypothesis of the asynchrony of visual consciousness.
An existing hypothesis states that visual consciousness is made up of 'microconsciousnesses' occurring asynchronously in several sites of the visual system of the brain with no need for direct means of binding. We extend this hypothesis to define what qualifies a neural activity for generating an element of consciousness to distinguish it from one that does not. We argue that, for these separate neural activities to represent elements of a compound sense of consciousness, they each need the support of sites that unconsciously process an important attentional referent and that it is the commonality of such referents in differing sites which bring the microconsciousnesses together. We consider the broader implications of this extended hypothesis for other sensory modalities and mental imagery.
Cyclic activity in nature. Causes of stability.
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A human T cell-specific cDNA clone encodes a protein having extensive homology to immunoglobulin chains.
We have cloned and sequenced a human mRNA specific for mammalian T-lymphoid cells. The message was found to be expressed in human and murine T lymphoblasts, thymocytes and phytohaemagglutinin-stimulated T lymphocytes. The protein deduced from the cDNA sequence has a molecular weight of 34,938 and shows extensive similarity to the entire length of the variable, joining and constant regions of mammalian immunoglobulin light chains. In addition, the relative positions of the cysteine residues are similar to those of the light chains of murine and human immunoglobulin molecules. These properties suggest that the cDNA clone may correspond to a message that specifies part of the human T-cell receptor.