Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PSYC 4300 - Psychophysiology > Applied Psychophysiology > Flashcards

Applied Psychophysiology Flashcards

1
Q

Human as lie detector (2)

A

54% accuracy
Detecting facial expressions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Deception detection

Application

A

Mostly used by government agencies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Brain Fingerprinting

Guilty Knowledge Test (GKT)

A

A P300-MERMER (P300 + LNP)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Three types of stimuli are used:

A

Targets (known to everyone)
Irrelevant (immaterial information)
Probes (known only to perpetuator)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Targets (known to everyone)

A

Red: information that the suspect knows, whether or not he committed the crime crime

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Irrelevant (immaterial information)

A

Green: information not known to the subject

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Probes (known only to perpetrator)

A

Blue: crime-relevant information only the perpetrator would know

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

“Information absent”

A

Brainwave response of an innocent suspect to stimuli relevant to a murder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

“Information Present”

A

Brainwave response of a serial killer to stimuli relevant to a murder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Detection Deception

Event related brain potentials
Advantages (2)

A

NOT dependent on ANS
Less vulnerable to countermeasures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

P3 and countermeasures

A

Wiggling toes and imagining being slapped wiped out the P3 in one study

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Vigilance

A

Detection of random, infrequent signals over time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Terms related to vigilance (4)

A

Boredom/monotony, vigilance, workload

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

P300

A

Good indicator of workload

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Vigilance diagram

P300 elicited by infrequent counted tones when presented (3)

A

Concurrently with 8 display elements
Concurrently with 4 display elements
Count only tones (highest)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Vigilance meaning (what I wrote)

A

How quickly you respond to targets vs. nontargets
(Alertness)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Example of vigilance:

A

Air traffic controllers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

P300 good indicator of workload meaning

A

Response to infrequent tones (positive or negative)

19
Q

What does P300 mean?

A

3rd wave (P3)
300 ms of ERP (event)

20
Q

P300 components (2)

A

Amplitude (either positive or negative)
Latency (time)

21
Q

Scalp distribution

A

N2-P3 complex

22
Q

Earlier potential:

A

Exogenous (related to environmental stimuli)

23
Q

Later potential:

A

Endogenous (related to cognitive processing)

24
Q

Increase workload

A

P3 in P300 decreases

25
Q

Clinical applications

Auditory and Visual evoked potentials

A

Detects hearing loss in newborns
Useful for detecting hemianopia (if there’s a blind field- blindness over half the field of vision)

26
Q

Clinical applications

Clinical populations

A

Down’s syndrome- Lack of ERP habituation
HIV- Smaller Auditory P300 amplitude

27
Q

Clinical applications meaning (what I wrote)

A

Potential to open up ideas to what this means, what part of brain, what’s going on early on

28
Q

Clinical applications

EEG abnormalities detected in (4)

A

Tumors, encephalitis, epilepsy, meningitis

29
Q

In the waking adult (3)

A

Delta (associated with hemorrhage, tumor)
Spike activity (epilepsy)
Note: abnormal EEG in ~20% of healthy subjects

30
Q

Epilepsy (what I wrote)

A

NEED EEG (diagnosed based on individual’s brain capacity)

31
Q

In the waking adult (what I wrote)

A

Ex: no delta during the day
Specific pattern expect to see when asleep, specific characteristics when awake

32
Q

Clinical Applications

Diagnosing Multiple Sclerosis

A

Event Relation Potentials (ERP) complements MRI

33
Q

Diagnosing Multiple Sclerosis

Event Relation Potentials (ERP) complements MRI (2)

A

Small lesions not visible in MRI are captured by ERP
But ERPs don’t always reveal lesions well defined by MRI

34
Q

Clinical applications

In brain death

A

EEG & ERP

35
Q

In brain death
EEG & ERP

Auditory ERP (3)

A

Waves I-II: 8th cranial nerve
Waves III-IV: Medulla and pons
Waves V: Midbrain (colliculi)

36
Q

Waves I and II result from…
While later waves
Wave V

A

The eighth nerve
Reflect postsynaptic activity in major brainstem auditory centers.
The component most analyzed in clinical applications, originates from the inferior colliculus

37
Q

Clinical applications
In schizophrenia (2)

A

Higher voltage beta activity (24-33 Hz) compared to controls & diminished alpha

Electrodermal activity (EDA) generally higher in chronic schizophrenics (hyper arousal)

38
Q

Hyper arousal (what I wrote)

A

Association cortex

39
Q

Clinical applications

In Attention Deficit Hyperactivity Disorder (ADHD) (3)

A

EEG suggest cortical hypo arousal

Low frequencies (theta & alpha) are HIGH
Beta LOW

Theta/beta ratios

40
Q

Clinical applications

Predicting degenerative disorders (3)

A

Alzheimer’s, Substance abuse, Depression

41
Q

Predicting degenerative disorders

Alzheimer’s (2)

A

P300 amplitude in 1st degree relatives of Alzheimer’s patients
In Alzheimer’s patients, auditory P3 is reduced and scalp topography changed (larger in frontal sites when typically P300 is larger in posterior)

42
Q

Predicting degenerative disorders

Substance abuse (2)

A

P300 amplitude LOWER in sons of alcoholic fathers
Another study, poor control of EDR in response to predictable loud noise (most likely due to poor inhibitory control)

43
Q

Predicting degenerative disorders

In depression

A

Left frontal hypoactivation: More alpha activity in the left frontal lobe (less beta) than in the right frontal lobe

PSYC 4300 - Psychophysiology (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions