Exam 3: Neuroscience and Behavior

The electrical charge of a neuron at rest is largely the result of a chemical "pump" that transports _____ from inside to outside the neuron.

Hodgkin and Huxley (1939)conducted early research on the action potential using _____ as subjects.

A heritability index of 0 for a behavioural trait indicates that:

A medical artist is drawing a homunculus with body-part size in relation to the size devoted to it in the somatosensory cortex.Which body part should be drawn LARGEST?

The neurons that receive information from the external world and convey information through the spinal cord are called:

_____ and _____ are functional neuroimaging techniques.

Ben has a series of X-ray photographs taken from around his head at different angles.A computer program then combines these images into one picture of the brain.Ben has just received a(n)_____ scan.

_____ is/are a section(s)on a strand of _____.

Vesicles are analogous to:

_____ has been shown to boost aspects of memory and motor skills by increasing the number of synapses and even promoting the development of new neurons in the hippocampus.

When you are walking home,a neighbour's large,aggressive dog gets loose and begins chasing you.You begin running to flee from the dog,scanning for the best possible escape route as you do so.What division of the nervous system is LEAST active during this flight?

Which neurotransmitter is MOST closely associated with pleasure and motivation?

Lynn suffers from frequent seizures,and doctors suspect that they might be occurring because of unusually high levels of which neurotransmitter?

Some areas of the brain control basic life functions,such as regulation of breathing and heart rate.For this reason,you may not survive damage to your:

Humans have _____ pairs of chromosomes.

As the heritability index for a particular behaviour increases:

Use the following to answer questions : Scenario II In pioneering research by Sperry and colleagues,split-brain patients were asked to stare at a dot on a screen centered between their eyes,while words of common objects were projected onto the screen either in their left or right visual fields.Subsequently,patients were asked to reach behind a screen with either their left or right hands and identify the object among other common objects by touch alone. -(Scenario II)Using the procedure described in the scenario,split-brain patients were simultaneously shown the word key in the left visual field and the word chain in the right visual field.They were then asked what word was projected onto the screen.Patients will respond that they saw the word:

A mouse has a larger cerebral cortex than does a snake.

Plasticity refers to cortex adaptation to changes in sensory inputs.

Humans have 23 pairs of chromosomes.