Psych Exam 2 Flashcards
Affect
Any emotional feeling
Central drive system
A set of neurons in the brain that most directly promotes a specific motivational state or drive
Central state theory of mind
The most direst physiological bases for motivational states lie in neural activity in the brain. According to most versions of this theory, different drives correspond to activity in different, localizable sets of neurons
circadian rhythm
Any cyclic physiological or behavioral change that has a period of about one day even in the absence of external cues signaling the time of day
discrete emotion theory
The belief that basic emotions are innate and associated with distinctive boldly and facial reactions
dopamine
One of many neurotransmitter substances in the brains. It is crucial for wanting
emotion
A subjective feeling that is experienced as directed toward some particular object or event
Endorphins
Chemicals produced in the body that act like morphine in inhibiting pain
Homeostasis
The constancy in the body’s internal environment that must be maintained through the expenditure of energy
Mood
A free floating emotional feeling, not directed at a specific object
motivation
The entire constellation of factor, some inside the organism and some outside, that cause an individual to behave in a particular time
motivational state
An internal, reversible condition in an individual that orients the individual toward one or another type of goal. This condition is not observed directly but is inferred from the individuals behavior, also called a drive
regulatory drive
Sleep, hunger, thirst
Non Rem sleep
stages 1-3
REM Sleep
The recurring stage of sleep during which the EEG resembles that of an alert person, rapid eye movement, the large muscles of the body are relaxed, and true dreams are most likely to occur
non regulatory drive
Sex, achievement
principles of motivation
Motivational state; regulatory: safety drives, reproductive, social, educative
Types of drive
Different drives correspond to neural activity in different but overlapping central drive systems
liking vs. wanting reward
Dopamine is essential for want but not for liking. Endorphins are responsible for liking.
Hunger
Appetite stimulating and appetite-supressing neurons. Eating a large meal causes physiological changes. Leptin helps regulate body weight by action on the hypothalamus to reduce appetite
Sleep
Most true dreams occur is REM sleep and sleep thought occurs in non-REM sleep. Light synchronizes the internal clock with the light-dark cycle.
Emotions
Affect is the degree of arousal and degree of pleasantness or unpleasantness. Psychologists have no consensus on how to classify emotion.
theory of emotion
Emotional feeling precedes and causes bodily arousal. Intensity of the emotional feeling depends on bodily response, but the type of emotion experienced depends on the cognitive assessment of the external stimulus situation
Absolute threshold
The faintest stimulus of a given sensation that an individual can detect
Amplitude
The amount of physical energy or force exerted by a physical stimulus at any given moment. Related to loudness
Basilar membrane
A flexible membrane in the cochlea of the inner ear: the wave-like movement of this structure in response to sound stimulated the receptor cells for hearing
Cochlea
A coiled structure in the inner ear which the receptor cells for hearing are located
Difference threshold
The minimal difference that must exist between two otherwise similar stimuli for an individual to detect them as different
Frequency
Any form of energy that changes in a cyclic or wave like way, the number of cycles or waves that occur during a standard unit of time. Related to pitch
Hair cells
The receptor cells of hearing, which are arranged un rows along the basilar membrane of the cochlea in the inner ear
Olfaction
Sense of smell
Outer ear
The pinna and the auditory canal
Perception
The recognition, organization, and meaningful interpretation of sensory stimuli
pheromones
A chemical that is released by an animal and that acts on other members of the species to promote so,e specific behavioral or physiological response
Phonemes
The various vowel and consonant sounds that provide basis for spoken language
Pitch
The quality of the sensation of a sound that is most relayed to the frequency of the physical sound stimulus
Psychophysics
The scientific study of the relationship between physical characteristics of stimuli and the sensory experiences that the stimuli produces
Sensory adaption
The temporary decrease in sensitivity to sensory stimulation that occurs when a sensory system is stimulated for a period of time, and the temporary increase in sensitivity that occurs when a sensory system is not stimulated for a period of time
Sensory area
Areas of the brain’s cerebral cortex that receive and analyze input from the body’s senses. Separate sensory areas exist for each distinct sense
Sensory receptors
Biological structures that respond to physical stimuli by producing electrical charges that can initiate neural impulses
Signal detection theory
The detection of a sensory stimulus is dependent upon both the physical intensity of the stimulus and the physiological state of the perceiver
Transduction
The process by which a receptor cell produces an electrical change in response to physical stimulation
Sensory processes
Physical stimulus, physiological response, sensory experience
Sensory receptors
Sensory receptors respond to physical stimuli with electrical changes, called transduction. Electrical changes can trigger action potentials in sensory neurons.
Taste
6 types of taste: sweet, salty, sour, bitter, umami, and fat. Taste receptors can trigger neural impulses in taste sensory neurons, which send input to the primary taste area in the frontal lobe and to other parts of the brain.
Pain
C Fibers and A Delta fibers, two types of pain sensory neurons, mediate two different waves of pain. A delta fibers are responsible for strong and fast pressures. C fibers mediate slower pain. A Delta fibers are myelinated and thicker
Amplitude Vs Frequency
Amplitude is related to the loudness. Frequency is relayed to pitch
Anatomy of Outer Ear
Pinna and auditory canal
Anatomy of Middle Ear
Ossicles (hammer, anvil, stirrup) and oval window
Anatomy of Inner Ear
Cochlea, basilar membrane, hair cells, tectorial membrane, auditory neurons, auditory nerve
Binocular Disparity
The cue for depth perception that stems from the separate views that the two eyes have have of any given visual object or scene. The farther ways object is, the more similar are the two views of it
Blind Spot
The place in the retina of the eye where the axons of visual sensory neurons come together to form the optic nerve. Because the blind spot lacks reception cells, light that strikes it is not seen
Cone vision
The high acuity color vision that occurs in moderate to bright light and is mediated by cones in he retina