EXCITABILITY

Pronunciation (US):

(GB):

 Dictionary entry overview: What does excitability mean? 

• EXCITABILITY (noun)
  The noun EXCITABILITY has 2 senses:

1. excessive sensitivity of an organ or body part

2. being easily excited

  Familiarity information: EXCITABILITY used as a noun is rare.

 Dictionary entry details 

• EXCITABILITY (noun)

Sense 1

Meaning:

Excessive sensitivity of an organ or body part

Classified under:

Nouns denoting cognitive processes and contents

Synonyms:

excitability; irritability

Hypernyms ("excitability" is a kind of...):

reactivity; responsiveness (responsive to stimulation)

Sense 2

Meaning:

Being easily excited

Classified under:

Nouns denoting attributes of people and objects

Synonyms:

excitability; excitableness; volatility

Hypernyms ("excitability" is a kind of...):

emotionalism; emotionality (emotional nature or quality)

Hyponyms (each of the following is a kind of "excitability"):

boiling point (being highly angry or excited; ready to boil over)

Derivation:

excitable (easily excited)

 Context examples 

This increases the frequency of chloride channel opening, allowing the flow of chloride ions into the neuron and ultimately leading to membrane hyperpolarization and a decrease in neuronal excitability.

(Diazepam, NCI Thesaurus)

An abnormal responsiveness or morbid excitability of an organ, its part, or entire organism or its part to stimuli.

(Irritability, NCI Thesaurus)

Using electrical stimulation we were able to increase excitability and in doing so increase the propensity for contagious yawning.

(Why Is Yawning so Contagious?, The Titi Tudorancea Bulletin)

Levetiracetam inhibits burst firing without affecting normal neuronal excitability, which suggests that it may selectively prevent hyper-synchronization of epileptiform burst firing and propagation of seizure activity.

(Levetiracetam, NCI Thesaurus)

Further, voltage-gated potassium channels are activated, thereby causing hyperpolarization and reducing neuronal excitability.

(Hydromorphone, NCI Thesaurus)

In addition, oxycodone closes N-type voltage-gated calcium channels and opens G-protein-coupled inwardly rectifying potassium channels resulting in hyperpolarization and reduction of neuronal excitability.

(Oxycodone, NCI Thesaurus)

This results in hyperpolarization, thereby reducing neuronal excitability, which further decreases the perception of pain.

(Dextropropoxyphene Hydrochloride, NCI Thesaurus)

The activation effects of the phenobarbital-receptor-ionophore complex include increased frequency of chloride channel openings, membrane hyperpolarization and ultimately synaptic inhibition and decreased neuronal excitability.

(Phenobarbital, NCI Thesaurus)

The agent decreases the flow of sodium ions into myocardial tissue, especially on the Purkinje network, during phase 0 of the action potential, thereby decreasing depolarization, automaticity and excitability.

(Lidocaine Hydrochloride, NCI Thesaurus)

This leads to an increase in chloride ion conductance, neuronal hyperpolarization, inhibition of the action potential and leads to a decrease in neuronal excitability.

(Alprazolam, NCI Thesaurus)