Electrophysiological studies in echinoderms are rare. In echinoids investigations have been made by Takahashi and Sandeman. The former used Diadema setosum, the latter Strongylocentrotus, Tripneustes and Toxopneustes. Takahashi gives a brief account of the electrical concomitant of the photic responses already described in detail by Millott and co-workers. Behavioural studies showed that the ra...

The upper limbs of 10 healthy subjects were cooled and then warmed over physiological temperature ranges. The compound action potentials of median digital nerves, median sensory nerve at the wrist, radial sensory nerve at the wrist, and median thenar muscle, all showed progressive reduction in latency, amplitude, duration and area during rising temperature. Our studies suggest that the sensory ...

The normal retinotectal path in the diencephalon of Xenopus tadpoles is widely distributed in the form of a wedge of fibres extending from the central grey to the outer margin of the diencephalon. Regenerating optic nerve fibres were shown, by silver-staining and proline autoradiography, to follow an abnormal path up the extreme lateral edge of the diencephalon. Study of tadpoles at various sta...

Arthroscopy of the wrist is a well-established procedure; however complications, problems and difficulties are possible. The complication rate is estimated to be about 2%, of which equipment failure is probably the most frequent. Injury of the overlying tendons, nerves and even the radial artery has also been described. The anatomy of certain wrists can cause considerable difficulties in obtain...

sum of the foot including the first web space. He had left foot drop. The clinical impression was mononeuritis multiplex involving the right ulnar nerve, right medial cutaneous nerve of the forearm and the left common peroneal nerve. Prostatomegaly was evident on ultrasound scan. Nerve conduction study using surface electrodes showed low amplitude Compound muscle action potential (CMAP) of the ...

AIM To determine which of the common used incision techniques has the lowest chance of iatrogenic damage to the nerves which at risk are the superficial branch of the radial nerve (SBRN) and the Lateral Antebrachial Cutaneous Nerve (LABCN). METHODS Twenty embalmed arms were dissected and the course of the SBRN and the LABCN in each individual arm was marked and the distance between the two br...

The somatosensory cortex of primates contains patch- and bandlike aggregates of neurons that are dominantly activated by cutaneous inputs from the radial, median, and ulnar nerves to the hand. In the present study, the area 3b hand cortex of adult monkeys was mapped immediately before and after combined median and ulnar nerve transection to evaluate the consistency, extent, and location of earl...

INTRODUCTION To date, only scant data has been reported regarding the anatomy of the radial nerve and profunda brachii artery and their relationships while within the triangular interval of the posterior arm. As this area has recently gained attention for using motor branches of the triceps muscle for nerve transfers, the present study was conducted. MATERIALS AND METHODS Fifteen adult cadave...

OBJECTIVE To demonstrate the new sensory restoration technique in radial nerve injury using the first branch of dorsal ulnar cutaneous nerve as the donor sensory nerve. MATERIAL AND METHOD Forty formalin-preserved cadavers (18 males and 22 females) were used as the subjects of the present study. The localization of the origin of first branch of dorsal ulnar cutaneous nerve was performed. The ...

INTRODUCTION Sensory and/or motor nerve function impairment as a consequence of neuropathy is often assessed using electroneurophysiological tests. However, in low-resource countries where the required equipment is rarely available, manual muscle strength testing (MMST) and monofilament testing (MFT) offer very reliable alternatives. In six leprosy programmes in four Asian countries, a multi-ce...