Ch 1 Terms Psych 3313

behavioral neuroscience

the study of biological correlations of behavior, emotions, and mental process

spatial resolution

tha ability to see fine detail in an image

temporal resolution

the ability to obtain infromation without delay

invasiveness

a measure of the degree of harm involved with a method

PET (Position emission tomography)

an imaging technique that provides information regarding the localization of brain activity

MRI (magnetic resonance imaging)

an imaging technique that provides very high-resolution structural images

fMRI (functional magnetic resonance imaging)

a technology using a serices of MRI images taken one to four seconds apart to assess the activityof the brain

DTI (diffusion tensor imaging)

use of MRI technology to trace fiber pathways in the brain by tracting the flow of water

EEG (electroencephalogram)

the recording of the brains electrical activity through electrodes placed on the scalp

MEG (magnetoencephalography)

a technology for recording the magnetic output of the brain

Single Sell recordings

the recording of the activity of single neurons through microelectrodes surgically implanted in the area of intrest

rTMS (repeated transcrainal magnetic stimulation)

a technique for stimulating the cortex at regular intervals by applying a magnetic pulse through a wirecoil encased in plastic and placed on the scalp

optogenetics

the genetic insertion of molecules in specific neurons that allows the activity of the neurons to be controlled by light

Lesion

pathological or tramatic damage to tissue

Microdialysis

a technique for assessing the chemical compostion of a very small area of the brain

Microtome, vibratome, cryostat

ways to finely slice tissue

post mortum tissue anaylis

must be freezed then sliced

golgi technique

first technique to reveal neurons in ther entierty in a stain

the neuron doctrine

the nervous system is made up of distinct individual cells that communicate

Structural Image

snaphot or pictures of the brain, shows physical anatomyE

Examples of structural scans

MRI, CT, DTI

Functional Scan

has a structural element but uses metabolic activity to indirectly gauge chemical and brain activitye

examples of functional scans

PET, fMRI, EEG, MEG

CT (computerized tomography)

converged x-ray beams

Pros and cons of PET scan

can be linked to specific molecule, less resolution

Scans that use magnets, dangerous to paitents with metal objects

fMRI, MRI, DTI

Precision of Scans

EEG< MEG< Electrophysiology

Invasive Techniques

Single unity/multi unit, local feild potentail, electrocorticogram

Noninvasive methods

EEG, fMRI, MRI, DTI, PET, CTP

Post mortem imaging techniques

bright feild, florescenece, electron microscopy

living imaging techniques

PET, fMRI, EEG, MEG, CT, MRI, DRI