The anatomy and motor nerve distribution of the eye muscles in the crayfish

1977 ◽  
Vol 121 (3) ◽  
pp. 349-366 ◽  
Author(s):  
DeForest Mellon
Keyword(s):  
Motor Nerve ◽  
Eye Muscles

Adaptive and Maladaptive Neural Plasticity Due to Facial Nerve Palsy

2016 ◽  
Vol 224 (2) ◽  
pp. 102-111 ◽  
Author(s):  
Carsten M. Klingner ◽  
Stefan Brodoehl ◽  
Gerd F. Volk ◽  
Orlando Guntinas-Lichius ◽  
Otto W. Witte
Keyword(s):  
Facial Nerve ◽  
Neural Plasticity ◽  
Cortical Plasticity ◽  
Brain Plasticity ◽  
Motor Nerve ◽  
Predictive Coding ◽  
Theoretical Framework ◽  
Cortical Reorganization ◽  
Nerve Lesion ◽  
Peripheral Facial Palsy

Abstract. This paper reviews adaptive and maladaptive mechanisms of cortical plasticity in patients suffering from peripheral facial palsy. As the peripheral facial nerve is a pure motor nerve, a facial nerve lesion is causing an exclusive deefferentation without deafferentation. We focus on the question of how the investigation of pure deefferentation adds to our current understanding of brain plasticity which derives from studies on learning and studies on brain lesions. The importance of efference and afference as drivers for cortical plasticity is discussed in addition to the crossmodal influence of different competitive sensory inputs. We make the attempt to integrate the experimental findings of the effects of pure deefferentation within the theoretical framework of cortical responses and predictive coding. We show that the available experimental data can be explained within this theoretical framework which also clarifies the necessity for maladaptive plasticity. Finally, we propose rehabilitation approaches for directing cortical reorganization in the appropriate direction and highlight some challenging questions that are yet unexplored in the field.

Partition Coefficient of 133Xe between Blood and Eye Tissues

1975 ◽  
Vol 14 (04) ◽  
pp. 301-309
Author(s):  
A. Marczak ◽  
A. Moszczyńska-Kowalska ◽  
H. Kowalski
Keyword(s):  
Partition Coefficient ◽  
Aqueous Humour ◽  
Vitreous Body ◽  
Flow Measurements ◽  
Solubility Coefficient ◽  
Eye Muscles ◽  
Eye Tissues ◽  
Relative Solubility ◽  
Blood Flow Measurements

SummaryThe relative solubility coefficient of 133Xe and the tissue-blood partition coefficient for the aqueous humour vitreous body, conjunctiva and external eye muscles of the rabbit were determined in vitro at 37° C and at various haematocrit values. The partition coefficient for haematocrit 40 was: for the aqueous humour 0,49 ml/ml, for the vitreous body 0,50 ml/ml, for the conjunctiva 0,81 ml/g and for the external eye muscles 0,77 ml/g. It was found that the solubility of 133Xe in rabbit erythrocytes is about 50 per cent higher than that in human red cells. The consequences of this fact for the precision of blood flow measurements by the method of tissue clearance are discussed.

The Effectiveness of Behaviour Therapy in Writer’s Cramp: A Case Report

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
Mahesh M M ◽  
Dr. Johnson Alex
Keyword(s):  
Mental Illness ◽  
Case Report ◽  
Family History ◽  
Male Patient ◽  
Motor Nerve ◽  
Conclusive Evidence ◽  
Behaviour Therapy ◽  
Present Treatment ◽  
Writer’S Cramp ◽  
Writer's Cramp

42 years old male patient referred from neurology department, working as a teacher, educated up to MSc, premorbidly anxious personality, family history mental illness (first degree relatives), comes from MSES with presenting complaints of difficulty in writing or copying since seven years. Disability progressed and he was unable to write even a few words legibly and could not hold object which leads to anxiety and dependency. When the patient was examined at Neurology OPD, find out that he has normal sensory and motor nerve functions. The present treatment involved the use of Bahaviour therapy. The findings in this case is very encouraging and studies with large sample sizes can be considered for further conclusive evidence on the treatment of writer’s cramp.

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