/
Understanding Affective Computing
Save to my account
Sign up
Understanding Affective Computing
Understanding Affective Computing
Study
1
Question
What is Affective Computing?
Answer
Affective computing focuses on understanding, detecting, and responding to human emotions to enhance user interactions with systems.
2
Question
Which model is used to detect emotional states in Affective Computing?
Answer
The Circumplex Model of Emotion is used to detect emotional states.
3
Question
What are the two dimensions of the Circumplex Model of Emotion?
Answer
The two dimensions are valence (positive-negative) and arousal (intensity).
4
Question
What are some physiological signals used for emotion detection?
Answer
Physiological signals include muscle activity, gesture, vocal tone, and respiration.
5
Question
How can human emotional states be displayed through technology?
Answer
Emotional states can be displayed through interfaces, haptic feedback, and more.
6
Question
What does ECG stand for, and what does it measure?
Answer
ECG stands for Electrocardiography and measures the electrical activity of the heart.
7
Question
What does PPG stand for, and what does it monitor?
Answer
PPG stands for Photoplethysmography and monitors heart rate and heart rate variability.
8
Question
What is the Galvanic Skin Response (GSR)?
Answer
Galvanic Skin Response (GSR) measures electrodermal activity, indicating physiological arousal.
9
Question
What is Surface Electromyography (EMG)?
Answer
Surface Electromyography (EMG) tracks the electrical activity of facial muscles.
10
Question
What is Functional Near-Infrared Spectroscopy (fNIRS)?
Answer
Functional Near-Infrared Spectroscopy (fNIRS) detects blood flow related to activity in the brain.
11
Question
What are the primary use cases for ECG?
Answer
Primary use cases for ECG include clinical diagnostics and cardiac health monitoring.
12
Question
What is a significant challenge in Affective Computing regarding data acquisition?
Answer
One challenge is ensuring ethics in emotion data gathering.
13
Question
What are the types of sensory modalities used in Affective Computing?
Answer
Sensory modalities include auditory, visual, and haptic.
14
Question
What is the function of Head-related transfer functions (HRTFs)?
Answer
HRTFs describe how an individual's ear shape, head size, and torso affect sound waves, allowing the brain to localize sound sources.
15
Question
What is the difference between Interaural Time Difference (ITD) and Interaural Level Difference (ILD)?
Answer
ITD refers to the difference in arrival time of a sound between the ears, while ILD refers to the difference in sound pressure level reaching each ear.
16
Question
How do active and passive haptic systems differ?
Answer
Active haptic systems provide feedback actively (e.g., through actuators), while passive systems do not provide active feedback (e.g., keyboards).
17
Question
What is Just Noticeable Difference (JND) in the context of sensory perception?
Answer
JND refers to the smallest noticeable difference in a stimulus that can be perceived, and is proportional to the magnitude of the original stimulus.
18
Question
What are mechanoreceptors, and what role do they play in tactile perception?
Answer
Mechanoreceptors are sensory receptors that respond to mechanical pressure or distortion and play a crucial role in tactile perception.
19
Question
Name the four types of mechanoreceptors and their primary functions.
Answer
The four types of mechanoreceptors are Merkel cells (fine details and textures), Meissner corpuscles (light touch, low-frequency vibrations), Pacinian corpuscles (high-frequency vibrations, deep pressure), and Ruffini endings (skin stretch and sustained pressure).
20
Question
What is the significance of the Somatosensory cortex in Affective Computing?
Answer
The Somatosensory cortex is vital for VR realism, contributing to spatial awareness and processing tactile feedback.
21
Question
What is Fitts' Law, and what does it describe?
Answer
Fitts' Law predicts pointing time based on distance and target size, describing the trade-off between speed and accuracy in pointing tasks.
22
Question
What does Hick's Law suggest for design decisions?
Answer
Hick's Law suggests that simplifying choices reduces decision-making time for users.
23
Question
What is Fechner's Law related to sensory perception?
Answer
Fechner's Law proposes that perceived sensation grows logarithmically with the intensity of the stimulus.
24
Question
What is the difference between Audification and Sonification?
Answer
Audification is the process of converting data into audible frequency ranges, while sonification turns data into sound to represent information.
25
Question
What technology is used for gaze-based interactions?
Answer
Eye tracking technology is used for gaze-based interactions.
26
Question
What is the cycle time for sensory reactions according to the text?
Answer
The cycle time indicates that two stimuli within the same PP cycle, Tp, of 100ms appear fused.
27
Question
Define the concept of ‘Utility in HCI’ as it relates to multi-modality.
Answer
Utility in HCI refers to the effectiveness of using various sensory modalities to enhance human-computer interactions.
28
Question
What does the term ‘vibrotactile design dimensions’ refer to?
Answer
Vibrotactile design dimensions refer to the aspects of design focusing on the frequency and importance of vibrations in haptic feedback.
29
Question
What is the implication of the term ‘frequency sensitivity’ in haptic feedback?
Answer
Frequency sensitivity refers to the range of frequencies over which the human body can perceive vibrations, particularly around 20-300 Hz.
30
Question
What is the role of muscle spindles and Golgi tendon organs in Affective Computing?
Answer
Muscle spindles and Golgi tendon organs detect limb position and movement, which are essential for virtual reality precision.