BIOLOGY mcq Flashcards
Where in the brain did Karl Lashley conclude that memories (“the engram”) are localised?
none of these structures alone are correct
Damage to which neuroanatomical structure alone produces the greatest disruption to performance on the delayed non-matching to sample task (DNMTS)?
Perirhinal cortex
When tested on the morris’ water maze task, rats with lesion to the ,, show impaired ability to form,,,
hippocampus/cognitive spatial maps
In longterm potentiation (LTP) the eviction of a ….ion must occur so that ions can enter the neuron
Magnesium/calcium
The anatomical locus where the optic nerves from the two eyes converge and are rearrange is called the optic?
Chiasm
The lateral Geniculate Nucleus (LGN) consist of
4 parvocelluar layers and 2 magnocelluar cells
In the primary visual cortex which type of cells respond to movement in a preffered direction?
complex cells
Research by Goodale and Milner (1992) indicate that an important function of the dorsal stream of vision is to
guide action
Primary motor cortex is laid out
somotopically
Which of the options is part of the motor loops that recieve input from various cortical areas and transmit it back to the cortex via the thalamus
Basal Ganglia
The… cortex is the main point of departure of motor signals from the cerebral cortex to lower levels of the sensorimotor hierachy.
primary motor
Mirror neurons in the monkey premotor cortex respond both during the …and…. the same action
performance/observation
according to Berridge and Robinson (2003), dopamine neurotransmission influences incentive sallience which is important for,,,
craving for reward (i.e wanting)
Within the dopamine system, neurons from the ventral tegmental area (vta) send input to the… while neurons in the substantia Nigra to the …
ventral striatum/dorsal striatum
cocaine and amphetamine are dopamine
indirect agonist
During aggregation, cells take on their final appearance by two methods, one of which does NOT depend on nearby cells. This process is called?
Cell autonomous differentiation
Which hypothesis states that developing axons grow towards their intended targets by following chemical cues laid down by pioneering cells
Blue print hypothesis
The increase in brain weight observed after birth despite cell death can be explained by:
Myelination
In the earlier stages of embryonic development, which germ layer will eventually develop into the nervous system
Ectoderm
