Octopus Optic Nerve Responses

Octopus optic nerve responses.

KARITA, K. and TASAKT, K. Octopus Optic Nerve Responses . Tohoku J. exp. Med., 1973, 110 (4), 311-318 The optic nerve response of the octopus (Octopus vulgaris) was recorded from the isolated preparation of the eye and the attached optic nerve. Photically initiated response was found to be most difficult to record and only in a few preparations was it possible to succeed in recording the optic ...

Delayed Responses in Octopus

Since Hunter's (1912) original experiment with rats, it has been shown that many animals can learn to choose correctly between identical shapes even though the signal indicating the correct choice is removed before the animal is allowed to make the choice. The period during which an animal can be kept waiting after the signal has been removed and still make the correct choice varies from specie...

Centrifugal Optic Nerve Responses Evoked by Auditory and Somatic Stimulation.

The evidence for the efferent control of receptor events has recently been repeatedly challenged. The present experiments were undertaken to provide a simple 'demonstration of the existence of such a mechanism. Clicks were presented to unanesthetized cats and bipolar recordings made of potential changes evoked in the optic nerve' and tract with implants of small (300 I.t spaced about 0.2 mm) el...

Optic nerve ischemia: optic nerve sheath decompression alone or with optic nerve decompression.

Effect of scuba-diving on optic nerve and sheath diameters

  Background :There is not any data available about the effect of high bar pressure condition on intracranial pressure. In this study, the effect of diving on the optic nerve and sheath diameters as non-invasive markers of intracranial pressure has been investigated.   Methods : Twenty professional male divers from twenty one volunteers were chosen for this cross-sectional study. Only one perso...