Hemispheric Lateralisation - split brain study Flashcards
1
Q
what is hemispheric lateralisation
A
mental processes and behaviours are dominated by one hemisphere
2
Q
split brain studies
A
corpus callosum split - generally in epileptic patients
3
Q
procedures
A
image / word projected to right (RVF)
or left (LVF)
4
Q
description
A
describing what is seen in each VF
image RVF - yet language centres in LEFT
5
Q
recognition by touch
A
not able to describe LVF but able to select items that are matching using left hand
6
Q
some functions are lateralised eg
A
language
7
Q
some functions are non-lateralised
A
vision - senses - motor
called cross-wired - contralateral
8
Q
how is vision contralateral + ipsilateral
A
- each eye receives light from each VF
- LVF of both eyes = right HEM
- RVF of both eyes = left HEM
9
Q
why is vision both con/ips
A
aids in depth perception
10
Q
split brain patients and VF
A
- commissurotomy
- hemispheres don’t cooperate - prevents epileptic fits
11
Q
Sperry (1968)
A
- 11 com patients
- image projected in RVF - LH processes
- same / different LVF - RH processes
- struggles to describe LVF image
