Arousal modulation refers to the ability to regulate and adjust one's level of physiological and psychological arousal in response to various stimuli or situations. It encompasses processes that can either increase or decrease arousal, allowing individuals to maintain optimal performance and emotional well-being. This modulation can involve techniques such as mindfulness, breathing exercises, or cognitive restructuring to manage stress, anxiety, or excitement effectively. Overall, arousal modulation plays a crucial role in emotional regulation and adaptive behavior.
The Locus Coeruleus is also known as the "blue spot" due to its distinct bluish appearance in brain sections. It is a small nucleus located in the pons of the brainstem and plays a crucial role in the modulation of arousal, attention, and stress responses by releasing norepinephrine.
FM stands for frequency modulation. The definition is: when the frequency of the carrier wave is changed in accordance with the intensity of the signal, it is called frequency modulation. In frequency modulation, only the frequency of the carrier wave is changed in accordance with the signal. However, the amplitude of the carrier wave remains unchanged.
Arousal can either enhance or hinder concentration, depending on the individual and the situation. In some cases, moderate arousal can improve focus and alertness, leading to better concentration. However, high levels of arousal, such as stress or anxiety, can overwhelm the brain's capacity to concentrate, resulting in decreased focus and performance.
The scientific and medical definition of 'arousal' or being 'aroused' simply refers to someone who is awake and paying sharp attention. In more casual use, arousal is almost exclusively used to refer to the reproductive system.
1)antenna scanning modulation is time oriented 2)internal modulation of clutter3)system instability
AM - Amplitude Modulation FM - Frequency Modulation
modulation
Frequency Modulation and Phase Modulation
frequency modulation..
due to velocity modulation density modulation occurs in TWT
The difference between frequency modulation and phase modulation is that with frequency modulation the angular frequency of the signal is modified while with the phase modulation, the phase angle of the signal is modified.
In Frequency Modulation (FM), if the modulation frequency is doubled, the modulation index does not necessarily double; it depends on the amplitude of the modulating signal. In Amplitude Modulation (AM), the modulation index is defined as the ratio of the peak amplitude of the modulating signal to the carrier amplitude, so it remains unchanged with varying modulation frequency. For Phase Modulation (PM), similar to FM, the modulation index is influenced by the amplitude of the modulating signal and does not inherently double with the modulation frequency. Thus, modulation frequency and modulation index are not directly linked in this way for FM, PM, or AM.
the modulation system is of FM
i dont know ans. of this.
Frequency modulation Phase modulation
QAM is a combination of phase modulation & amplitude modulation.
Modulation index is also called as Modulation depth. The modulation index of a modulation scheme describes by how much the modulated variable of the carrier signal varies around its unmodulated level.