Sensarions Flashcards
Place theory
Our perception of sound depends on where each component of frequency produces vibrations along with the basilar membrane
Frequency theory
Dates that the rate of nerve impulses traveling up the auditory nerve matches the frequency of tone, thus enabling us to sense It’s pitch
Bottom up processing
Analasys of the stimulus begins with the sense receptors and works up to the level of the brain and mind
Top-down processing
For Maisch and processing guided by higher level mental processes as we construct perceptions drawing on our experience and expectations
Absolute threshold
Absolute threshold is the smallest level of energy required by an extern all stimulus to be detectable by the human senses 50% of the time
Subliminal stimulus
Below one’s absolute threshold for conscious awareness
Signal detection theory
Predicts how and when we detect the presence of a faint stimulus signal) amid background noise (other stimulation). Signal detection theory assumes that there is no single absolute threshold and detection depends upon person’s experience expectations motivation and tiredness
Signal detection theory says that detection depends on what
Persons experience expectations motivation and level of fatigue
Stroop test
The strip affect is a demonstration of interference in the reaction time of the task,
Webbers law
To stimuli must differ by a constant minimum percentage rather than a constant amounts to be perceived as different
Please the parts in order in which light enters the eye
Cornea Iris Pupil Lens Retina Fovea Optic nerve to brains visual cortex
Accommodation
The process by which the eyes lens changes shape to help focus near or far objects on the retina
Retina
The light-sensitive inner surface of the eye, containing receptor rods and cones in addition to layers of other neurons that process visual information
Optic nerve
Carries neural impulses from the eye to the brain
Blind spot
Point where the optic nerve leaves the eye because there are no receptor cells are located there
Fovea
Central point in the retina around which the eyes cones cluster
Visual information processing
Optic nerve connect to the Salamis in the middle of the brain and I found this connects to the visual cortex
Bipolar and ganglion cells
Bipolar cells receive messages from photo receptors and transmit them to gangly on cells which are for the optic nerve
Trichromatic three Color theory
Young-helmholtz
Retina contains three different color receptors
One each sensitive to red green blue
And stimulated they produce the perception of any color
Does not explain after images
Opponent process theory
States that sensory receptors in the retina come in pairs
Red/green
Yellow/blue
Black/white
If one sensor is stimulated it’s pair is inhibited from firing
Achromatopsia
Total color blindness
Conduction hearing loss
Hearing loss caused by damage to the mechanical system that conducts soundwaves to the cochlea
Sensorineural hearing loss
Hearing loss caused by damage to the cochlea’s receptor cells or to the auditory nerve, also called nerve deafness
Frequency theory best explains how we perceive what
Pitched sounds
The sense of touch is a mix of four distinct skin senses which are
Pressure warmth cold and pain
Gate control theory
Mel Zack and wall proposed that are spinal cord contains a neurological gate that either block pain or allow it to be sensed
Smell and memories
Region for smell is closely connected with the brain region involved with memory the limbic system. That is my memories are made through the sense of smell
Sensory interaction
When one cents affects another sense. So the taste of strawberry interacts with its smell and it’s texture of the tongue to produce flavor
Kinesthesis
Is the sense that gives us information about the location of our body parts with respect to each other and allow us to before movements. Information comes from the receptors in joints ligaments and muscle fibers
Vestibular senses
Give this information about body position and movement and acceleration factors critical for maintaining our sense of balance. The sensory organs for the vestibule or sensor located in the linear ear vestibular socks and semicircle canals which both contain fluid that moves in the head rotates
