Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
Reasoning for functional asymmetries
|
Speeded local connections v. transcortical, non-identical provides more information, specialize
|
|
|
Intrahemispheric Communication
|
CC, anterior commisure, posterior commisure, subcortical routes
|
|
|
Role of CC
|
Integration of information, synchronization, competition between hemispheres
|
|
|
Unusual view task
|
requires transmission of information across the CC
left for naming and right for recognition |
|
|
Switch Cost
|
Swapping between spatial and verbal judgments induces competition and increases reaction times
higher in older adults |
|
|
Split Brain Patients
|
Can name info presented to right visual field but claims to see nothing to LVF, can't arrange blocks with left hand (compete)
|
|
|
Anatomy of CC
|
Rostrum, Genu, isthmus, splenium
Anterior- higher order Posterior- visual auditory, and sensory (Splenium) posterior sectioned- can still name objects |
|
|
Language
|
96% left, RH has some: word superiority, draw picture, emotional content is lateralized
|
|
|
RH asymmetries
|
RH- visuospatial, processing unfamiliar faces, left more important for voluntary smiles
|
|
|
Attention
|
some visual info can still be communicated- ability to orient eyes away from cue
can't maintain two attentional foci |
|
|
Reasoning
|
LFV/RH: better at causal perception/ using acquired perceptual knowledge
RVF/LH: better at causal inferences/ using knowledge of world |
|
|
Pattern
|
Animals maximize
Humans match due to interpreter LH: uses frequency matching RH: maximizes |
|
|
Dichotic Listening task
|
Competition between ears, right ear advantage
Songs- right ear better for content, left ear superior for melody |
|
|
Global v. Local processing
|
LH: local, RH: global- shown through split brain, lesions, stroke and healthy
|
|
|
Spatial Frequency hypothesis
|
Cells with small receptive fields respond to high spatial frequencies, larger fields respond to low frequencies
Explanation for global/local distinction LH: better identifies high frequency stimuli RH: better identifies low frequency stimuli |
|
|
Audition
|
RH: sensitive to prosody/emotional content, low frequency
LH: sensitive to speech processing, high frequency |
|
|
Spatial representations
|
LH: Categorical spatial relationship, letters (language)
RH: Coordinate spatial relationships, needed to plan actions |
|
|
Item representation
|
RH: Studied objects/prototypes
LH: Novel/exemplars |
|
|
Handedness and language
|
Production of sequential movements
LH: generative assembling device (GAD)- generates complex representations, favor tool usage in right hand language specialization led to motor bias or vice versa |
|
|
Other theories of handedness/language
|
Language due to orofacial bones, handedness due to orientation of fetus
Twins- increase in left-handedness within pair of twins |
|
|
Lateralization in animals
|
birds-
LH better at categorizing stimuli and identifying food, song production RH- better for color, size, and shape primates - RH: better for tactile discrimination and facial recognition |
