Principle component analyses of questionnaires measuring individual differences in synaesthetic phenomenology.

Automaticity and localisation of concurrents predicts colour area activity in grapheme-colour synaesthesia

In grapheme-colour synaesthesia (GCS), the presentation of letters or numbers induces an additional 'concurrent' experience of colour. Early functional MRI (fMRI) investigations of GCS reported activation in colour-selective area V4 during the concurrent experience. However, others have failed to replicate this key finding. We reasoned that individual differences in synaesthetic phenomenology m...

Individual differences in synaesthesia : qualitative and fMRI investigations on the impact of synaesthetic phenomenology

An investigation of the cognitive and perceptual dynamics of a colour-digit synaesthete.

L, a 47-year-old female of Choctaw descent, was first identified as a potential synaesthetic++ on the basis of self-report data regarding digit-colour associations. Upon completion of the identification procedures typified in the literature, it was concluded that L met the classic memory-performance criteria used to identify synaesthetic ability. A series of Stroop-type tasks were then performe...

Acquiring synaesthesia: insights from training studies

Synaesthesia denotes a condition of remarkable individual differences in experience characterized by specific additional experiences in response to normal sensory input. Synaesthesia seems to (i) run in families which suggests a genetic component, (ii) is associated with marked structural and functional neural differences, and (iii) is usually reported to exist from early childhood. Hence, syna...

Measuring gas demand security using Principal Component Analysis (PCA): A case study

Safeguarding the energy security is an important energy policy goal of every country. Assuring sufficient and reliable resources of energy at affordable prices is the main objective of energy security. Due to such reasons as special geopolitical position, terrorist attacks and other unrest in the Middle East, securing Iran’s energy demand and increasing her natural gas exports have turned into ...