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Brain–computer interface - Quiz
Contributed by: Neal
  • 1. What does EOG stand for in the context of physiological computing?
A) Electro-optic graphing
B) Electrooculography
C) Electronic ocular grid
D) Electro-occular guidance
  • 2. Why are EOG and eye-tracking systems not classified as BCIs?
A) They rely on physical movement
B) They do not record brain activity
C) They require invasive procedures
D) They are too inaccurate for control
  • 3. In what year was the study reported regarding the control of a mobile robot using EOG signals?
A) 1995
B) 2013
C) 2002
D) 1989
  • 4. How many EOG commands were used to control the mobile robot in the 1989 study?
A) Seven
B) Five
C) Three
D) Ten
  • 5. What is the primary requirement for the HCI described in the 2016 article concerning pupil-size oscillation?
A) Brainwave modulation
B) Eye movement
C) Covert interest
D) Visual fixation
  • 6. How is letter selection determined in the pupil-size oscillation interface?
A) Detection of eyelid movement
B) Best fit between pupil-size oscillation and brightness oscillation
C) Tracking the focus of the pupil
D) Analysis of EEG alpha waves
  • 7. What mental rehearsal words improve accuracy in the pupil-size oscillation interface?
A) Left and right
B) Bright and dark
C) Up and down
D) Yes and no
  • 8. Which signal did a researcher in the 1960s use to create Morse code?
A) Beta waves
B) Theta waves
C) Alpha waves
D) Gamma waves
  • 9. Who led the group that performed the first direct brain-to-brain interface between two rats in 2013?
A) Miguel Nicolelis
B) Kevin Warwick
C) The IINN-ELS researcher
D) Gerwin Schalk
  • 10. What type of signals did Gerwin Schalk report could discriminate vowels and consonants in spoken and imagined words?
A) ECoG
B) EOG
C) EEG
D) EMG
  • 11. In what year did Kevin Warwick link his nervous system to the Internet?
A) 1989
B) 2013
C) 2002
D) 1960
  • 12. How many electrodes were fired into Kevin Warwick's nervous system?
A) 1000
B) 10
C) 100
D) 50
  • 13. Which Spanish word was transmitted mind-to-mind in experiments using binary streams?
A) Ciao
B) Adios
C) Hola
D) Gracias
  • 14. What Italian word was transmitted mind-to-mind in experiments using binary streams?
A) Hola
B) Grazie
C) Ciao
D) Bongiorno
  • 15. How were the words transmitted in the long-distance non-invasive communication experiment?
A) Binary streams
B) Optical sensors
C) Morse code
D) ECoG signals
  • 16. What animal did Nicolelis and colleagues initially study in the 1990s?
A) Mice
B) Rats
C) Owl monkeys
D) Rhesus monkeys
  • 17. What characterizes an 'open-loop' BCI system?
A) The system allows for two-way communication
B) The system is connected to the internet
C) The system uses wireless transmission
D) The system provides no feedback to the user
  • 18. What did O'Doherty and colleagues demonstrate with a BCI in 2011?
A) A BCI that could synthesize human speech
B) A BCI that required zero training time
C) A BCI with sensory feedback via ICMS
D) A wireless BCI controlled by light
  • 19. How many neurons did Donoghue, Schwartz, and Andersen typically record from compared to Nicolelis?
A) 15–30 neurons
B) 1000–5000 neurons
C) 500–1000 neurons
D) 1–5 neurons
  • 20. What specific area of the brain did Andersen's group use for recording premovement activity?
A) Somatosensory cortex
B) Frontal lobe
C) Posterior parietal cortex
D) Visual cortex
  • 21. What is the primary function of the BCI2000 system developed by Gerwin Schalk?
A) A robotic arm controller for domestic chores
B) A general-purpose system for BCI research
C) A portable headset for consumer gaming
D) A software for decoding speech in paralyzed patients
  • 22. What technique did researchers use in 2019 to aid a patient with speech impairment?
A) Functional magnetic resonance imaging
B) Electroencephalography
C) High-density electrocorticography
D) Intracortical microstimulation
  • 23. What does the 'single neuron insufficiency principle' state?
A) Recording from many neurons decreases accuracy
B) Single neurons carry limited information, making ensemble recording more accurate
C) Neurons function best in complete isolation
D) A single neuron is sufficient to control a robotic arm
  • 24. What does the 'wireless' approach using light-gated ion channels involve?
A) Channelrhodopsin to control genetically defined neurons
B) Radiofrequency waves to stimulate the brain
C) Bluetooth connectivity between sensors
D) Inductive charging of intracranial implants
  • 25. Which device is considered the first neuroprosthetic device mentioned in the text?
A) Cochlear implants
B) Connexus BCI
C) Stentrode
D) Retinal implants
  • 26. Approximately how many people had received cochlear implants as of December 2010?
A) 100,000
B) 1,000,000
C) 50,000
D) 736,900
  • 27. Which company developed the Stentrode BCI?
A) Neuralink
B) Paradromics
C) Synchron
D) Neural Signals
  • 28. What animal was used by Neuralink in 2020 for a successful implant?
A) Sheep
B) Monkey
C) Rat
D) Pig
  • 29. What specific ability did the monkey demonstrate with Neuralink in 2021?
A) Moving a computer cursor
B) Operating a robotic arm
C) Reconstructing images
D) Playing video games
  • 30. Who established in the 1980s that dispersed groups of neurons collectively control motor commands?
A) Yang Dan
B) Phillip Kennedy
C) Fetz et al.
D) Apostolos P. Georgopoulos
  • 31. In the research by Yang Dan et al., where were the electrodes embedded?
A) Thalamus
B) Cerebral cortex
C) Frontal lobe
D) Primary motor cortex
  • 32. What was the main purpose of the study conducted by Yang Dan et al. in 1999?
A) Moving robotic arms
B) Controlling video games
C) Restoring hearing
D) Reproducing images from cats
  • 33. Which region of the brain was targeted in the 1999 cat study?
A) Motor cortex
B) Visual cortex
C) Lateral geniculate nucleus
D) Cerebellum
  • 34. What animal was the subject of the 2008 study at the University of Pittsburgh Medical Center?
A) Sheep
B) Pig
C) Monkey
D) Cat
  • 35. Which of these is explicitly mentioned as a potential use for neuroprosthetics?
A) Hair growth
B) Muscle mass increase
C) Skin regeneration
D) Bladder function
  • 36. Who coined the term 'BCI' and produced the first peer-reviewed publications on the topic?
A) Hans Berger
B) Jacques Vidal
C) Alvin Lucier
D) Thorsten O. Zander
  • 37. In what year did Jacques Vidal introduce the term 'brain–computer interface' in scientific literature?
A) 1988
B) 1965
C) 1990
D) 1973
  • 38. What phenomenon allows the brain to handle signals from implanted prostheses as natural effector channels?
A) Neural resonance
B) Synaptic synchronization
C) Cognitive adaptation
D) Cortical plasticity
  • 39. Who was the first person to record human brain activity using EEG?
A) Thorsten O. Zander
B) Alvin Lucier
C) Jacques Vidal
D) Hans Berger
  • 40. Which musical composer created the piece 'Music for Solo Performer' in 1965, utilizing EEG to play instruments?
A) Thorsten O. Zander
B) Alvin Lucier
C) Hans Berger
D) Jacques Vidal
  • 41. What frequency range defines the alpha wave discovered by Hans Berger?
A) 15–30 Hz
B) 8–13 Hz
C) 40–100 Hz
D) 1–4 Hz
  • 42. Which of the following is considered a non-invasive BCI implementation?
A) EEG
B) ECoG
C) Endovascular
D) Microelectrode array
  • 43. What type of BCI implementation is considered invasive?
A) EEG
B) Microelectrode array
C) MEG
D) MRI
  • 44. What specific brain potential was part of the 'BCI challenge' issued in 1973?
A) Alpha wave oscillation
B) Electroexpectogram
C) Visual Evoked Potential
D) Contingent Negative Variation
  • 45. In 1990, the cognitive wave representing expectation learning in the brain was termed what?
A) Electroexpectogram
B) Cortical oscillation
C) Neural potential
D) Alpha wave
  • 46. Who introduced the concept of the passive brain–computer interface in 2011?
A) Jacques Vidal
B) Alvin Lucier
C) Thorsten O. Zander
D) Hans Berger
  • 47. The BRAIN initiative, funded by DARPA starting in 2013, supported work from which of these entities?
A) UCLA Medical Center
B) Paradromics
C) Siemens
D) Lippmann Laboratories
  • 48. What is the main advantage of invasive BCI?
A) Increased signal accuracy
B) Easier installation process
C) Non-surgical application
D) Lower cost of manufacturing
  • 49. What can occur as a result of the body reacting to implanted electrodes?
A) Increased brain cell growth
B) Permanent brain reorganization
C) Scar tissue build-up
D) Improved neural conductivity
  • 50. Where are invasive BCI devices typically implanted?
A) Within the skull bone
B) Directly into the grey matter
C) Inside the spinal cord
D) On the surface of the skin
  • 51. What is a negative consequence of scar tissue around an implant?
A) Increased signal amplitude
B) Enhanced image resolution
C) Signal weakening or disappearance
D) Faster data transmission
  • 52. Who was the researcher who developed an early BCI to restore sight?
A) Isaac Newton
B) Jens Naumann
C) William Dobelle
D) Jerry
  • 53. In what year was the first prototype implanted into the patient named Jerry?
A) 1978
B) 2004
C) 2002
D) 1988
  • 54. How many electrodes were in the single-array BCI implanted into Jerry?
A) 100
B) 16
C) 50
D) 68
  • 55. What is the sensation of seeing light caused by brain implants called?
A) Phosphenes
B) Visual hallucination
C) Neural adaptation
D) Starry-night effect
  • 56. What was used to capture signals sent to Jerry's implant?
A) A mainframe monitor
B) Cameras mounted on glasses
C) A laser scanner
D) A headset antenna
  • 57. Who was the first of 16 patients to receive Dobelle's second-generation implant?
A) Jerry
B) Jens Naumann
C) William Dobelle
D) John Smith
  • 58. What term describes the distribution of phosphenes across the visual field?
A) The neural pathway effect
B) The starry-night effect
C) The vision mapping error
D) The grey-shade phenomenon
  • 59. What action was Jens Naumann able to perform shortly after his implant?
A) Watch high-definition video
B) Read small text
C) Drive a car slowly
D) Identify colors
  • 60. Who was the first person to have a human brain implant that produced signals of sufficient quality to simulate movement?
A) Kennedy and Bakay
B) Matt Nagle
C) Jonathan Wolpaw
D) Johnny Ray
  • 61. What condition did Johnny Ray develop following a brain-stem stroke in 1997?
A) Locked-in syndrome
B) Anarthria
C) Tetraplegia
D) Aphasia
  • 62. In what year was the first human brain implant installed for Johnny Ray?
A) 2002
B) 2005
C) 1998
D) 1997
  • 63. Who was the first person to control an artificial hand using a BCI?
A) Matt Nagle
B) Johnny Ray
C) Kennedy
D) Jonathan Wolpaw
  • 64. Where was the BrainGate chip-implant placed in Matt Nagle?
A) Right precentral gyrus
B) Frontal lobe
C) Brain stem
D) Left precentral gyrus
  • 65. What did the UCSF researchers report in early 2025?
A) A new language processing model
B) The development of a new skull implant
C) A cure for locked-in syndrome
D) A man controlled a robotic arm by thinking
  • 66. What technology is enabling integrated, invasive BCI designs with smaller size and lower power?
A) CMOS technology
B) Quantum computing
C) Biological synthesis
D) Fiber optic technology
  • 67. What do invasive BCI electrodes primarily attempt to record?
A) Oxygen saturation
B) Action potential signals (spikes)
C) Cerebrospinal fluid pressure
D) Chemical neurotransmitter levels
  • 68. Which model is used to describe the interface between a recording electrode and the electrolytic solution surrounding neurons?
A) Fluid Dynamics model
B) Circuitry-Resistance model
C) Standard Model
D) Hodgkin-Huxley model
  • 69. What property of the electrode-tissue interface makes signal detection at small voltages challenging?
A) High capacitance
B) High resistance
C) High reactivity
D) Low conductivity
  • 70. What mechanical property are researchers attempting to match to brain tissue to improve stability?
A) Magnetic permeability
B) Young's modulus
C) Thermal expansion coefficient
D) Electrical impedance
  • 71. Where are partially invasive BCI devices located relative to the skull?
A) Attached to the scalp
B) Inside the skull
C) Within the grey matter
D) Outside the skull
  • 72. Who conceived the idea for the Stentrode BCI?
A) A team of neurosurgeons
B) University of Melbourne students
C) DARPA researchers
D) Thomas Oxley
  • 73. In what animals were preclinical studies for the Stentrode first evaluated?
A) Primates
B) Mice
C) Rats
D) Sheep
  • 74. Where is the Stentrode device placed?
A) The jugular vein
B) Superior sagittal sinus
C) The carotid artery
D) Directly on the motor cortex
  • 75. What is the primary benefit of the Stentrode regarding surgical access?
A) Increasing signal depth
B) Eliminating wireless interference
C) Avoiding a craniotomy
D) Reducing battery size
  • 76. Which medical condition's treatment procedure is most similar to the Stentrode placement?
A) Epileptic seizure management
B) Parkinson's disease
C) Idiopathic intracranial hypertension
D) Stroke rehabilitation
  • 77. How many patients were reported in January 2023 to have used the Stentrode for one year without serious adverse events?
A) Six
B) Two
C) Four
D) Eight
  • 78. Which organization provided funding for the development of the Stentrode?
A) DARPA
B) NASA
C) The World Health Organization
D) The National Institutes of Health
  • 79. What video game was a teenager able to play using ECoG technology?
A) Pong
B) Tower of Hanoi
C) Pac-Man
D) Space Invaders
  • 80. How does ECoG compare to scalp-recorded EEG?
A) It has a narrower frequency range
B) It has lower signal-to-noise ratio
C) It requires more training
D) It offers higher spatial resolution
  • 81. What technology was used in 2014 to restore communication for ALS patients?
A) Functional near-infrared spectroscopy
B) Intracortical single-neuron recording
C) Electrocorticography
D) EEG source imaging
  • 82. Who is credited with founding the BCI Lab in 1991?
A) Gert Pfurtscheller
B) Bin He
C) Niels Birbaumer
D) Jonathan Wolpaw
  • 83. What type of wave is generated involuntarily when people see something they recognize?
A) Mu rhythm
B) Alpha rhythm
C) Slow cortical potential
D) P300
  • 84. What was the word error rate reported in the speech decoding study by Chang and Makin?
A) 10%
B) 25%
C) 1%
D) 3%
  • 85. What device was used in a 2019 study to improve EEG mental state classification via evolutionary algorithms?
A) High-density ECoG array
B) Muse device
C) Flip-flop circuit
D) Schmitt trigger
  • 86. Who demonstrated the first single and multichannel dry active electrode arrays in the early 1990s?
A) Hunter Peckham
B) NCTU researchers
C) Case Western scientists
D) Babak Taheri
  • 87. What components are integrated into the active electrode array to power the circuitry?
A) Batteries
B) External power cables
C) Solar collectors
D) Capacitive transformers
  • 88. In the 1999 Case Western Reserve University study, how many electrodes were used in the skullcap?
A) 128
B) 64
C) 16
D) 4
  • 89. What specific brain rhythm was used to control a switch in the 1999 quadriplegic study?
A) Theta-rhythm
B) Beta-rhythm
C) Mu-rhythm
D) Alpha-rhythm
  • 90. What were the MEMS dry electrodes in the 2009 NCTU headband designed to be applied to?
A) The forehead only
B) The occipital scalp region
C) The parietal scalp region
D) Non-hairy body sites
  • 91. Which algorithm was specifically mentioned as supporting multiple channel system BCI analysis?
A) Graph theory
B) Fast Fourier transform (FFT)
C) Canonical correlation analysis (CCA)
D) Independent component analysis (ICA)
  • 92. What technique is efficient in separating EEG signals from noise?
A) Impedance matching
B) Bluetooth transfer
C) Topomap
D) Independent component analysis (ICA)
  • 93. What is a suggested solution for the low spatial resolution of EEG-based BCIs?
A) Removing batteries
B) Using wet electrodes
C) Increasing skin preparation
D) EEG-fMRI fusion
  • 94. What condition did the person treated by Gert Pfurtscheller's team have?
A) Locked-in syndrome
B) Tetraplegia
C) Paraplegia
D) Amputation
  • 95. What did the person with paraplegia operate in the UC Irvine study?
A) A 5 axis robot arm
B) A functional electrical stimulation system
C) A BCI-robotic gait orthosis
D) An Emotiv EPOC home automation system
  • 96. Which device did Alex Blainey use to control a 5 axis robot arm in 2009?
A) fMRI
B) MEG
C) BCI-robotic gait orthosis
D) Emotiv EPOC
  • 97. What is the typical delay when using fMRI to control a robot arm?
A) One second
B) Ten seconds
C) Zero seconds
D) Seven seconds
  • 98. Where were the laboratories that reconstructed images from brain signals in 2008 located?
A) Graz, Austria
B) Irvine, USA
C) London, UK
D) Kyoto, Japan
  • 99. What was the resolution of the images reconstructed from brain signals in 2008?
A) 50x50 pixels
B) 10x10 pixels
C) 1x1 pixel
D) 100x100 pixels
  • 100. How many seconds of random YouTube videos were in the database used for the 2011 video reconstruction study?
A) 100 seconds
B) 1 million seconds
C) 18 million seconds
D) 18 thousand seconds
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