In inhibitory postsynaptic potentials, the opening of chlorine and potassium channels generally occurs so that chlorine enters, with a negative charge, and potassium leaves, with a positive charge. The synergistic effect of this ionic flow is the hyperpolarization of the cell, making it difficult for an action potential to occur.
If the test result comes out to be negative for a condition that is actually existing in reality, then such a test result is said to be false negative.
This means when the negative test result is incorrect, it can be called as a false negative.
Thus, the result would have been correct if the result would have come out to be positive.
In statistics false negative is considered as a type II error in which a test is conducted to check for a single condition and the result comes out to be negative even when the condition exists.
In the given situation, the person has a chronic disease but the screening test shows that the person does not have the disease and hence, this is an example of false negative.
