Neuroscience Flashcards
Level of analysis
The idea is that a topic can be studied in several different levels and ways, with each contributing its dimension
Nerve net
Anatomists applied stains to brain tissue, and they saw a continuous network like a highway without a stop sign.
Camillo golgi
Developed a staining technique in which a thin slice of the brain is immersed in a silver nitrate
Raman y Cajal
Using golgi stain he studied new born brain because of less density
Individual unit called neuron not continuous network
Edgar Adrian
Recorded single neurons’ electrical signal by using hollow glass filled with salted solution to conduct signal
Rest potential charge
Negative inside
Basis of sensation
If nerve impulse are crowded closely together the sensation is intense if they are separated sensation is feeble
Principal of neural representation
Everything a person experiences is based on representation in the person’s nervous system or neural firing
Hubel, Wiesel
Feature detectors
Experience-dependent plasticity
The structure of the brain changed by experience
Temporal lobe
Responds to complex stimulus
Receive signal from ear (upper temporal lobe)
Hierarchial processing
Neuron send their simple stimulus from low to complex or high-level that respond to complex stimulus
Lower to higher level of brain
PET positron emission tomography
1976
FMRI
1990
Voxels
Like pixels that make up digital photos, voxels are 3D cubes that are created by FMRI scanners to represent brain image
