Time constant in Electrophysiology is

(1) Defined as 63% delay time and 63% rise time in a Calibration signal

(11) For a high frequency filter, time constant is time taken for calibration to decay
from full scale to 63%

(111) Time constant is the product of Resistance and capacitance

(iv) Raising the low frequency filter will cause prolongation of time constant

A:-(i) and (ii)

B:-(i) and (iii)

C:-(i) and (iv)

D:-(ii), (iii) and (iv)
Correct Answer:- Option-B

Question10:-Computerised/Digital EEG : Pick the correct option

(i) Alias signal can interfere with signal of interest in digital EEG

(ii) Amplitude and Pen alignment should be constantly monitored and adjusted in
digital EEG.

(111) Manipulation of raw data is possible even after completion of test in Digital
EEG

(iv) Unable to store large volumes of data in smaller spaces

A:-(i) and (ii)

B:-(i) and (iii)

C:-(i) and (iv)

D:-(ii) and (iv)

Correct Answer:- Option-B

Question11:-Regarding Evoked potentials, Choose the correct statements

(1) Visual Evoked potentials are responses from lateral Geniculate body

(ii) Level of consciousness of the subject/patients is non significant in brain stem
auditory evoked potential recording

(111) The most important response obtained is from the motor cortex in somato
sensory Evoked potential

(iv) Averaging is needed in all Evoked potential recording

A:-(i) and (ii)

B:-(ii) and (iii)

C:-(iii) and (iv)

D:-(ii) and (iv)

Correct Answer:- Option-D
Question12:-Pace maker for alpha rhythm is

A:-Cortex

B:-Thalamus

C:-Basal Ganglia

D:-Mesencephalor

Correct Answer:- Option-B