PSYC1020 Lecture Notes - Lecture 6: Neural Coding, Brain, Receptive Field
Document Summary
The stimulus/action it represents: what stimulates it to fires, eg: each neuron in the primary visual cortex only responds to one part of vision. This is called the receptive field of the neuron. Hubel and wiesel, 1959: produced the first recordings of the visual cortex neurons, won nobel prize in 1981. Advantages: greatest technique to localise and time brain function. Disadvantages: high invasion because electrodes are attached into the brain, can only be conducted on animals (unless sometimes done on humans during surgery to find location of lesion) Clinical use of eeg: best method to detect the stages of sleep as oscillation patterns change, monitoring different forms of epileptic seizures. Two important oscillation frequencies: there are two important frequencies of the eeg bands, alpha waves (8-12 hz) Clinical use of erp: erp can detect if a baby is deaf by recording brain activity after listening to the audio, observe when the wave patterns begin to look abnormal.
