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Lecture notes and notes from book (Fundamentals of Human Neuropsychology)

3 Pages
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Department
Psychology
Course Code
PSY318H5
Professor
Melissa Holmes

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Lifetime history of epilepsy
{
Had a cyst removed from her left temporal lobe
{
Developed an infection that damaged the left hemisphere
{
Diagnosed as a global aphasic (unable to either produce or understand language), but could
still sing songs she had known before
{
M.S.
{
Portrait: Words and Music
Basic anatomical principles
{
{
Behavioral research on intact persons
Outline of the lecture
Left and right hemispheres have different functions
{
Laterality
{
Language
{
Controlling movement on the right side of the body
{
Left hemisphere
{
Perceiving and synthesizing nonverbal information
{
Controlling movement on the left side of the body
{
Right hemisphere
{
Anatomical Asymmetry in the Human Brain
Both hemispheres play a role in nearly every behaviour
|
Laterality is relative, not absolute
{
Cerebral site is just as important as cerebral side (e.g. frontal lobe)
{
Laterality is affected by environmental and genetic factors
{
Laterality is exhibited by a range of animals
{
Four variables that complicate laterality research
{
,}ÁÀUÁZ}µouuY
Right hemisphere is larger and heavier than the left; but the left contains more gray matter
{
Larger in the left hemisphere
|
Woudu}o~tv]l[
{
Larger in the right hemisphere
|
Usually two Heschl's gyri in the right hemisphere and only one in the left
|
,Zo[µ~]uǵ]}Ç}Æ
{
Temporal lobes have a marked asymmetry
{
Asymmetry in the temporal lobes correlated with asymmetry in the thalamus
{
Distribution of various neurotransmitters is asymmetrical
{
Frontal operculum(Broca's area) is organised differently on the left than on the right
{
Some Basic Facts about Anatomical Asymmetries
Slide 9
Slope of the lateral fissure is gentler on the left hemisphere
{
Right larger on the surface (tone)
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Left larger inside (production of grammar)
{
}[]}Pv]Ì]((voÇ}vZo(v]PZ]
{
Right hemisphere extends further anteriorly; the left hemisphere extends further posteriorly
{
Anatomical asymmetries affected by sex and handedness
{
Anatomical Asymmetries
Slide 11
Neurons in the left frontal operculum and in the left precentral cortex have more dendritic
branches than those in the right frontal operculum and right precentral cortex
{
Neuronal Asymmetry
Asymmetry in Neurological Patients
Cerebral Asymmetry
Monday, March 08, 2010
2:56 PM
PSY295 -Neuropsychology Page 1
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Description
CerebralAsymmetry Monday,March08, 2010 2:56PM Portrait:WordsandMusic { M.S. { Lifetimehistoryofepilepsy { Hadacyst removedfromherlefttemporallobe { Developedaninfectionthatdamagedthelefthemisphere { Diagnosedasaglobalaphasic(unabletoeitherproduceorunderstandlanguage),butcould stillsingsongsshehadknownbefore Outlineofthelecture { Basicanatomicalprinciples { Neurologicalresearchondamagedbrains Behavioralresearchonintactpersons AnatomicalAsymmetryintheHumanBrain { Laterality { Leftandrighthemisphereshavedifferentfunctions { Lefthemisphere { Language { Controllingmovementontherightsideofthebody { Righthemisphere { Perceivingandsynthesizingnonverbalinformation { Controllingmovementontheleftsideofthebody ,}7ZZ}oKK; { Fourvariablesthatcomplicatelateralityresearch { Lateralityisrelative,notabsolute Bothhemispheresplayaroleinnearlyeverybehaviour { Cerebralsiteisjustasimportantascerebralside(e.g.frontallobe) { Lateralityisaffectedbyenvironmentalandgeneticfactors { Lateralityisexhibitedbyarangeofanimals SomeBasicFactsabout AnatomicalAsymmetries { Rig
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