Patterns: Descriptive Terminology

Question 1

the number of times a wave occurs in one second

Answer 1

Frequency

Question 2

frequency is expressed in…

Answer 2

Hz

Question 3

Beta

Answer 3

> 13Hz

Question 4

Alpha

Answer 4

8-13Hz

Question 5

Theta

Answer 5

4-7Hz

Question 6

Delta

Answer 6

<4Hz

Question 7

activity with waves of same frequency or constant duration

Answer 7

rhythmic

Question 8

activity of differing frequencies

Answer 8

arrhythmic

Question 9

the length of time the wave lasts

Answer 9

duration

Question 10

what is duration calculated in?

Answer 10

milliseconds or seconds

Question 11

The faster the frequency the ___

Answer 11

shorter the duration

Question 12

The slower the frequency the ___

Answer 12

longer the duration

Question 13

the strength of the electrical activity in the brain

Answer 13

Voltage

Question 14

what is voltage expressed in?

Answer 14

microvolts (uV)

Question 15

amplitude reduction

Answer 15

attenuation

Question 16

abrupt beginning and abrupt ending of the activity distant from the background in frequency, morphology, and amplitude

Answer 16

paroxysmal

Question 17

the shape of waves or waveforms

Answer 17

morphology

Question 18

activity that comes and goes

Answer 18

transient

Question 19

20-70 msec
14-50 Hz

Answer 19

spike

Question 20

70-200 msec
5-14 Hz

Answer 20

Sharp

Question 21

having 2 components

Answer 21

Biphasic wave

Question 22

having 3 components

Answer 22

Triphasic wave

Question 23

waves sharply contoured standing out from the background having the same shape characteristics of wave indicative of epilepsy

Answer 23

Epileptiform

Question 24

activity of one frequency or waves similar in duration

Answer 24

monomorphic

Question 25

activity of more than one frequency

Answer 25

polymorphic

Question 26

two or more waves different frequencies that stand out from the background

Answer 26

complex

Question 27

activity restricted to one or a few electrodes

Answer 27

focal

Question 28

activity predominantly on one side of the head

Answer 28

lateralized

Question 29

activity occurs at the same time all over the head

Answer 29

generalized

Question 30

activity that is similar in frequency, voltage, and morphology from both hemispheres

Answer 30

symmetry

Question 31

activity that is similar in frequency, voltage, and morphology from homologous head regions

Answer 31

synchrony

Question 32

approximately the same interval between discharges

Answer 32

periodic

Question 33

reaction to stimulation

Answer 33

reactivity