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- Percieve
- Hearing
Hearing: Audio scale
When does noise start to hurt?
23.10.2025
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- Percieve
- Hearing
Hearing: Cochlear Implants
Thanks to one device, many deaf people can hear again: the cochlear implant.
23.10.2025
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- Percieve
- Hearing
Neural classics of linguistic competence
Without Broca's area and Wernicke's area, we would be quite tongue-tied.
23.10.2025
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- Think
- Consciousness
Consciousness: The Ascending Reticular Activating System (ARAS)
Formation reticularis switching center: This region controls alertness and attention.
30.08.2013
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- Basics
- Communication of Cells
The Neuron: Form and Function
What types of neurons are there? What happens in dendrites, cell bodies, and axons? See for yourself in this clickable neuron.
02.05.2012
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- Basics
- Communication of Cells
Communication under the Microscope
Tiny and beautiful: Researchers make visible the cells that determine how our brain works
19.04.2012
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- Percieve
- Hearing
Animal hearing
Hearing with the lower jaw or in the ultrasonic range: animals' hearing is very diverse.
27.07.2012
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- Glossary
Acetylcholine
Acetylcholine is one of the most important neurotransmitters in the nervous system. In the central nervous system, it is involved in attention, learning, and memory; in the peripheral nervous system, it transmits excitation from nerves to muscles at the neuromuscular end plates and controls processes of the autonomic nervous system, i.e., the sympathetic and parasympathetic parts. Areas in which acetylcholine acts as a messenger substance are called cholinergic. It was the first neurotransmitter to be discovered, identified in 1921 by Otto Loewi in the heart of a frog.
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- Glossary
Acetylsalicylic acid
Pharmaceutical active ingredient for pain, fever, and inflammation – the best-known pain reliever containing this active ingredient is aspirin.
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- Glossary
Adaptation
Adaptation refers to the process by which the sensory organs, the perceptual system, or the entire organism adjusts to the intensity and quality of stimuli and to changes in environmental conditions. In visual adaptation, for example, the pupil and the sensitivity of the photoreceptors regulate themselves according to the prevailing light conditions.
