Perceptual level
Internal stimuli is unconscious stimuli that occurs without conscious thought. External stimuli occurs from outside sources that procur conscious thought.
The conscious awareness of stimuli received by sensory receptors is called perception. It is the process by which the brain interprets and organizes sensory information to make sense of the world around us.
This is called sensation.
The primary somatosensory cortex in the parietal lobe of the brain is responsible for processing and interpreting the kind and intensity of stimuli that cause cutaneous sensations.
Stimuli. You, reading this is affecting your conscious mind (assuming you're conscious). physical stimuli (the 5 senses) or psychological. if you experience it it affects your mind. (maybe in minor ways, but it effects)
Subliminal perception refers to the detection of stimuli below the threshold of conscious awareness. These stimuli may influence thoughts, emotions, and behaviors without individuals being consciously aware of them.
Conscious beings are aware of their surroundings and can perceive and respond to stimuli, while sentient beings have the capacity to experience emotions and feelings.
When a cat's whiskers are touched, it is primarily the somatosensory cortex in the temporal lobe that processes this sensory input. The somatosensory cortex is responsible for interpreting touch sensations, including those from the whiskers. This area helps the cat respond to stimuli by twitching or adjusting its behavior based on the tactile feedback.
Subliminal perception refers to the processing of stimuli below the threshold of conscious awareness. These stimuli can influence behavior and cognition despite not being consciously perceived. Research suggests that subliminal messages can impact attitudes and preferences, although the extent of this influence is still debated.
Tactile stimuli are converted into neural signals by sensory receptors in the skin, which then travel through peripheral nerves to the spinal cord. From there, the signals ascend to the brainstem and then the thalamus, which relays them to the somatosensory cortex in the parietal lobe for processing.
By direction: sensory and motor. Sensory send stimuli to the brain and motor sends stimuli from the brain. By function: somatic and autonomous. the somatic system is under our conscious control, whereas the autonomous responds automatically to stimuli without conscious thought. The autonomous system is further categorized into the sympathetic system, which excites the body: "fight or flight," and the parasympathetic, which generally relaxes the body: "rest and digest."
The somatosensory area is responsible for processing sensory information related to touch, pressure, temperature, and pain from the skin and muscles. It helps us perceive and interpret sensory stimuli to create our sense of touch and spatial awareness.