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Tranquilizers

Seizure is a ...

Question

Seizure is a disorder of nervous system due to excessive stimulation of neurons. It cannot be relieved by drugs that acts by

A

blocking Na + channels

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B

opening K + channels

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C

increasing GABA concentration

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D

increasing Glutamate concentration

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Solution

The correct option is D increasing Glutamate concentration
Seizure is due to excessive stimulation which may be due to

increase in activity of Na + channels

decrease in activity of K+ channels

decrease in GABA concentration

increase in glutamate concentration

So drugs having opposite effect will exert anti-seizure effect.

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By using tiny probes as neural prostheses, scientists may be able to restore nerve function in quadriplegics and make the blind see or the deaf hear. Thanks to advanced techniques, a single, small, implanted probe can stimulate individual neurons electrically or chemically and then record responses. Preliminary results suggest that the microprobe telemetry systems can be permanently implanted and replace damaged or missing nerves.
The tissue-compatible microprobes represent an advance over the typical aluminium wire electrodes used in studies of the cortex and other brain structures. Researchers accumulate much data using traditional electrodes, but there is a question of how much damage they cause to the nervous system. Microprobes, which are about as thin as a human hair, cause minimal damage and disruption of neurons when inserted into the brain.
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The probes can have up to four channels, each with its own recording/stimulating electrode.
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