PSY247 Lecture 1 Principles & Methods

Psychophysics

Transduction

Chemical senses

Body Senses

Somatosensation

How much of the cortex is involved in visual processing?

Failure in recognition due to failure in perception

Failure in recognition despite successful perception

Hierarchical Processing

Top down processing

Bottom-up or Top-down processing?

Selectivity

Tuning

Organisation

Cortical magnification

Doctrine of specific nerve energies

Noise

Spontaneous Activity

Detectability

Detection Threshold

Absolute Threshold

Sensitivity

Method of Adjustment (MoA) Detection

Method of Constant Stimuli (MoCS)
Yes-No Paradigm

Method of Constant Stimuli (MoCS)
2AFC Paradigm

Measuring Magnitude: Estimation Technique

Compressive non-linear functions

Discrimination

Discrimination threshold

Precision

Accuracy

Bias

Method of adjustment (MOA)
Matching

Method of adjustment (MOA)
Matching
=> Accuracy

Method of Adjustment (MoA)
Matching
-Precision

Adaptation
(4 consequences)

Anatomical Research Methods

Anatomical research methods:
staining dead brains
(3 features)

Recording techniques:
Single cell recording

Recording techniques:
Optical imaging

Visually evoked potential

Magnetoencephalography (MEG)

Electroencephalography (EEG)

Positron Emission Tomography (PET)

Functional Magnetic Resonance imaging (fMRI)

Anatomical Research Methods:
Lesions

Anatomical Research Methods:
Human Brain Lesions
(Neuropsychology)

Transcranial Magnetic Stimulation (TMS)
(3 properties)

Axon

Action Potential

Grey Matter

White matter

Neurotransmitters

Psychometric Function

Suprathreshold

Thalamus