Angularis oculi vein temperature variations related to man's mental activity--preliminary studies.

This preliminary study describes a noninvasive, inexpensive approach to the study of lateralization as related to mental activity. It supports the concept of a thermoregulatory role of blood in cerebral temperature control. Right and left angularis oculi vein temperatures were measured during periods of mental activity and mental rest and both temperature changes were asymmetrical.

Experimental evidence of reciprocal temperature relationship between the parietofrontal region and the orbital emissary vein in the pony.

The heads of 5 ponies were embalmed and the vessels were double injected with latex. Dissection of these specimens revealed venous pathways (1) from the nasal area to the cavernous sinus and (2) from the parietofrontal region to the ventral petrosal sinus. Thermistors were chronically implanted near the orbital emissary veins of 3 additional ponies.