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Cognitive Science
Lecture Notes
55
Other
Undergraduate 3
11/03/2008

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Term
Magnocellular
Definition
"where" part of vision, motion contrast & depth, parietal lobe, spatial orientation
Term
Parvocellular
Definition
"what" part of vision, form color & depth, temporal lobe, object recognition
Term
Lateral Geniculate Nucleus (LGN)
Definition
6 layers, each layer from 1 eye, 4 layers from parvo, 2 layers from magno, first place vision info goes to get processed
Term
Emmert's Law
Definition
S(p) = C(S(r) x P(p)) where S(p) is perceived size, S(r) is retinal size, and P(p) is perceived distance
Term
Ames Room
Definition
Where people of same height seem to be different heights
Term
Two visual cues
Definition
1)pictorial cue (occlusion/linear perspective) and 2) occular/motor cue (dalmation in pic)
Term
Geons
Definition
3D Shapes called Geons by Biederman. There are about 50 of these--least changeable with viewpoint.

they have accidental viewpoints-->or views where some of the geon is occluded
Term
Interpolation Models of Vision
Definition
Poggio and Edelman--ignore 3D, store multiple views and average or interpolate them.
Term
Alignment Model of Vision
Definition
Ullman, Morphing from 2D to 3D, align to a "special" view
Term
Sound
Definition
pressure variation in t around the mean atmospheric pressure
Term
frequency
Definition
number of sound waves to pass any point in a second, Hertz, pitch
Term
amplitude
Definition
magnitude of movements produced, measure in decibels, loundness
Term
timbre
Definition
whatever left after pitch and loudness, sound quality
Term
Fourier Spectrum
Definition
better for natural sounds, you lose time, lowest freq-fundamental freq, higher ones overtones or harmonics
Term
spectrogram
Definition
frequency on y axis, time on x axis
Term
purpose of auditory system
Definition
communication and language, IDing of prey/predator, sound localization and balance in the vestibular section
Term
Outer ear
Definition
filtering of the sounds for best frequencies
Term
Middle ear
Definition
malleus, incus and stapes bones, from air to fluid they knock on the tympanic membrane
Term
Inner Ear
Definition
Cochlea and semicircular canals
Term
Basilar Membrane
Definition
Organ of Corti runs along, has inner and outer hair cells (receptor cells). Place on it gives frequency thicker bigger freq.s
Term
Receptor/Nerve Cell Ratio in Hearing
Definition
1 receptor, lots of fibers because needs to be very fine tuned
Term
Auditory Pathways
Definition
MGN-temporal cortex (where tonotopic map of space)
Term
Pscyhoacoustics
Definition
auditory processing
Term
Speech Perception
Definition
perception of speech signals, factors that affect speech processing
Term
Linguistics
Definition
study of language structure at the highest level, structure of language-human cognition
Term
Psycholinguistics
Definition
psychological and neuropsychological mechanisms that allow us to produce and comprehend language
Term
phonological
Definition
sounds of the language
Term
morphological
Definition
conjunctions into words
Term
syntactic
Definition
grammar
Term
semantic
Definition
meaning
Term
pragmatic
Definition
practical aspects of meaning
Term
Spectrograph
Definition
x axis time, y axis frequency, amplitude = intensity
Term
phoneme
Definition
smallest segment of speech that if changed would change the meaning of the word. 2 kinds: vowels, consonants
Term
How many vowels in English language?
Definition
about 13, when vocal tract open, the fundamental freq. or pitch of the voice
Term
Consonants
Definition
vocal tract closed, 24 in English, uses voicing, place of articulation and manner of articulation
Term
Voicing
Definition
When vibrating voiced, when not vibrating un-voiced
Term
Place of Articulation
Definition
d,t-alveolar; m,w-labial; f-labiodental; s,z-dental; k-celar
Term
Stop Consonants
Definition
complete closure e.g. ba, ma
Term
Fricatives
Definition
partial closure-narrowing of vocal tract e.g. s,f,z
Term
Why is speech processing difficult?
Definition
Speaking rate--15 phonemes per second, and absence of clear boundaries
Term
Morphemes
Definition
meaning units of language - words and meaningful word components
Term
Morphemes
Definition
meaning units of language - words and meaningful word components
Term
Lexical Access
Definition
word--access to the "dictionary" with three keys: phonemic, orthographic, and semantic
Term
Lexical Access Serial Models
Definition
Autonomous search model, like library
Term
Lexical Access Parallel Models
Definition
Logogen model, active word to a threshold, logogen is like a scorecard highest wins (pool all possible information)
Term
Connectionist Model of Lexical Access
Definition
Nodes between visual feature, letter, word and semantic units. Connections are excitatory or inhibitory.
Term
Cooperative Principle
Definition
quality,quantity,relation,manner
Term
Chomsky thought...
Definition
language was innate, a nativist. Like an organ in the brain. You don't learn language.
Term
Chomsky had a theory composed of...
Definition
deep structures and surface structures (underlying meaning and actual utterances)
Term
Transformational rules
Definition
modifications that retain deep structure and specify the surface structure.
Term
How quickly do children learn language?
Definition
4 years globally
Term
Piaget's theory of language and concepts.
Definition
3 points at development language always minor factor: from sensorimotor intelligence to representational intelligence, from preoperational thinking to concrete operations and from concrete operations to formal operations
Term
Linguistic relativity
Definition
Structural differences between language systems will be paralleled by non-linguistic cognitive differences between the speakers of the two languages
Term
Linguistic Determinism
Definition
the structure of anyone's language strongly influences or fully determines the world view he will acquire as he learns the language.
Term
Vygotsky thought...(about language)
Definition
language was egocentric and decreases. language and thought converges to make verbal thoughts and hence language.
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