Chapter 10 Flashcards
How is consciousness defined?
the subjective experience of perceiving oneself and their surroundings
How do you know if a person is conscious or not?
If a person notices/reacts to the stimulus around them or not
What does masking mean?
It is when a stimulus is presented for a short amount of time that was preceded by or is followed by an interfering stimulus
What does backwards masking mean?
It is when the interfering stimulus is followed by the initial stimulus
What is it called when stimuluses are presented in short flashes?
Flash suppression because you lose sight of another stimulus like a yellow dot
What is an attentional blink?
It is when you didn’t get a chance to process the second stimulus when it appeared for a short time after identifying the previous one.
What is binocular rivalry?
It is when your vision alternates between what you are seeing in each eye.
Can you be mildly conscious of something?
No, you either are conscious of it or you are not which is known as the “All or Nothing Phenomenon”
CC: Why is the study of consciousness more acceptable to researchers of today than in the past?
They wanted to measure brain activity and see under what conditions they could present a stimulus and have someone be unaware of it
CC: What do people perceive during binocular rivalry?
Peoples vision alternates every few seconds between what is being viewed in each eye
CC: The ambiguous sound that could either be “tent” or “dent” will sound one way or another based on if your in the woods or in a car. What does this tell us about consciousness?
You are not always conscious of a stimulus as soon as it happens. So you construct or infer based on context.
What does brain death mean?
That the brain shows no activity and recovery is not possible
What is the brain activity of someone with a coma?
The brain shows a consistent but a low level of activity and cannot respond to stimuli
What causes someone to be in a coma?
Traumatic brain damage
If someone does emerge from a coma what state are they in?
A vegetative state
What are the characteristics of someone in a vegetative state?
they have a limited level of responsiveness like a increased HR in response to pain
What is the following state from a vegetative state?
Minimally conscious
What are the characteristics of a minimally conscious state?
People can have brief windows of time with of speech and speech comprehension
What does readiness potential mean?
When there is an increase in motor activity in anticipation of movement
CC: What was the order of these events, the conscious decision to move, brain activity relevant to movement, and the movement itself?
Brain activity relevant to movement, the conscious decision, and the movement itself.
CC: How do self-initiated movements differ from movements in response to a signal?
Self-initiated movements take longer to happen and takes place in the Basal Ganglia. Compared to responsive movements which occur faster.
TQ: At what point does the response to a visual stimulus begin to differ in times when it becomes conscious and times when it does not?
A) In the receptors of the eye
B) During transmission from the eye to the brain
C) As soon as the information reaches the visual cortex
D) After initial processing in the visual cortex
D
TQ: What is meant by ‘attentional blink’?
A) Attention span has a maximum duration that varies among people
B) You tend to shift attention between one eye and the other
C) Pay attention to one event causes you to ignore a slightly later event
D) You do not notice the changes that occur while blinking your eyes
C
TQ: What evidence suggests that consciousness is an all or none process?
A) You are as likely to attend to something unimportant as something important
B) Many messages from the eyes stop before they reach the brain
C) Brain response either spread widely to the brain or they don’t
D) Perception of ambiguous stimulus can vary widely depending on the context
C
TQ: At any given moment, what do you see during binocular rivalry?
A) You see stimuli in both eyes
B) You see the stimulus in one eye or another
C) You see something that is compromise between the two stimuli
D) You see flashing lights
B
TQ: The interference of a woman in a vegetative state might be conscious depended on what type of state?
A) Her hand movements
B) The sounds that she made
C) Measurements of brain activity
D) Slow movements of her eyes
C
TQ: In Libet’s experiment, in which people reported the time of the decision to flex the wrist, why were the results shown in philosophical questions?
A) The results implied heredity and environment are equally important for controlling behavior
B) The results implied that the mind is separate from the body
C) The results implied conscious decisions do not control behavior
D) The results implied that human behavior depends on the same influences as the animal kingdom
C
TQ: Why is it difficult to report the time of a decision for a self-initiated movement?
A) The decision to move is a gradual process
B) Doing the movement interferes with vision
C) People prefer not to talk about their private experiences
D) Moving one hand interferes with the movement of the other hand
A
How is Circadian rhythm defined?
as the rhythm of activity and inactivity that lasts throughout the day
What is characterized by a 23-hour circadian rhythm cycle?
Someone who gets tired earlier in the evening and wakes up earlier in the morning
What biological functions are affected by the circadian rhythm?
hunger, thirst, urine production, blood pressure, alertness, and body temperature
CC: If you were on a submarine with only artificial light that was the same at all times what would happen to your circadian rhythm?
You would continue a 24-hour sleep-wake rhythm, but it would probably drift out of time with the submarines clock
CC: What might an evening person do to improve their morning alertness?
To find classes or a job that allows you to start later in the morning.
How can jet lag be defined?
It can be defined as a period of adjustment when your body’s internal clock is different from that of your new surroundings
CC: What does jet lag tell us about the sleep problems of a newborn baby?
A newborn is adjusting to a new time zone
What part of the brain controls the circadian rhythms?
the superchiasmatic nucleus